CASH AND INVESTMENTS

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CASH AND INVESTMENTS	12 Months Ended
	Dec. 31, 2014
Investments and Cash [Abstract]
CASH AND INVESTMENTS	CASH AND INVESTMENTS The following is a summary of marketable securities classified as trading and available-for-sale at December 31, 2014 and 2013 (in millions):   Cost   Unrealized Gains   Unrealized Losses   Estimated Fair Value 2014               Current marketable securities:               U.S. government and agency debt securities $ 321   $ 1   $ (1 )   $ 321 Mortgage and asset-backed debt securities 89   1   (1 )   89 Corporate debt securities 534   —   —   534 U.S. state and local municipal debt securities 2   —   —   2 Other debt and equity securities 46   —   —   46 Total marketable securities $ 992   $ 2   $ (2 )   $ 992                   Cost   Unrealized Gains   Unrealized Losses   Estimated Fair Value 2013               Current marketable securities:               U.S. government and agency debt securities $ 355   $ —   $ (1 )   $ 354 Mortgage and asset-backed debt securities 76   1   (2 )   75 Corporate debt securities 146   1   (1 )   146 U.S. state and local municipal debt securities 2   —   —   2 Other debt and equity securities 3   —   —   3 Total marketable securities $ 582   $ 2   $ (4 )   $ 580 Of the total estimated fair value in marketable securities listed above, $430 million as of December 31, 2014 was classified as "trading", with unrealized gains and losses recognized in investment income within the statements of consolidated income (no amounts were classified as "trading" as of December 31, 2013). The remaining estimated fair value of marketable securities was classified as "available-for-sale", with related unrealized gains and losses, net of tax, recognized in AOCI. The gross realized gains on sales of marketable securities totaled $1, $11 and $15 million in 2014, 2013, and 2012, respectively. The gross realized losses totaled $0, $6 and $6 million in 2014, 2013, and 2012, respectively. There were no impairment losses recognized on marketable securities during 2014, 2013 or 2012. Investment Other-Than-Temporary Impairments We have concluded that no other-than-temporary impairment losses existed as of December 31, 2014. In making this determination, we considered the financial condition and prospects of the issuer, the magnitude of the losses compared with the investments’ cost, the probability that we will be unable to collect all amounts due according to the contractual terms of the security, the credit rating of the security and our ability and intent to hold these investments until the anticipated recovery in market value occurs. Unrealized Losses The following table presents the age of gross unrealized losses and fair value by investment category for all securities in a loss position as of December 31, 2014 (in millions):   Less Than 12 Months   12 Months or More   Total   Fair Value   Unrealized Losses   Fair Value   Unrealized Losses   Fair Value   Unrealized Losses U.S. government and agency debt securities $ 147   $ (1 )   $ —   $ —   $ 147   $ (1 ) Mortgage and asset-backed debt securities —   —   21   (1 )   21   (1 ) Corporate debt securities —   —   —   —   —   — U.S. state and local municipal debt securities —   —   —   —   —   — Other debt and equity securities —   —   —   —   —   — Total marketable securities $ 147   $ (1 )   $ 21   $ (1 )   $ 168   $ (2 ) The unrealized losses for the U.S. government and agency debt securities and mortgage and asset-backed debt securities are primarily due to changes in market interest rates. We have both the intent and ability to hold the securities contained in the previous table for a time necessary to recover the cost basis. Maturity Information The amortized cost and estimated fair value of marketable securities at December 31, 2014, by contractual maturity, are shown below (in millions). Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.     Cost   Estimated Fair Value Due in one year or less $ 459   $ 459 Due after one year through three years 439   439 Due after three years through five years 15   15 Due after five years 77   77   990   990 Equity securities 2   2   $ 992   $ 992 Non-Current Investments and Restricted Cash Restricted cash is primarily associated with our self-insurance requirements. We entered into an escrow agreement with an insurance carrier to guarantee our self-insurance obligations. This agreement requires us to provide cash collateral to the insurance carrier, which is invested in money market funds and similar cash equivalent type assets. Additional cash collateral provided is reflected in "other investing activities" in the statements of consolidated cash flows. As of December 31, 2014 and 2013, we had $442 and $425 million in self-insurance restricted cash, respectively. We held a $19 million investment in a variable life insurance policy to fund benefits for the UPS Excess Coordinating Benefit Plan at both December 31, 2014 and 2013. The quarterly change in investment fair value is recognized in "investment income" on the statements of consolidated income. Additionally, we held escrowed cash related to the acquisition and disposition of certain assets, primarily real estate, of $28 million as of December 31, 2014 (none as of December 31, 2013). The amounts described above are classified as “investments and restricted cash” in the consolidated balance sheets. Fair Value Measurements Marketable securities utilizing Level 1 inputs include active exchange-traded equity securities and equity index funds, and most U.S. Government debt securities, as these securities all have quoted prices in active markets. Marketable securities utilizing Level 2 inputs include asset-backed securities, corporate bonds and municipal bonds. These securities are valued using market corroborated pricing, matrix pricing or other models that utilize observable inputs such as yield curves. We maintain holdings in certain investment partnerships that are measured at fair value utilizing Level 3 inputs (classified as “other investments” in the tables below, and as “other non-current assets” in the consolidated balance sheets). These partnership holdings do not have quoted prices, nor can they be valued using inputs based on observable market data. These investments are valued internally using a discounted cash flow model with two significant inputs: (1) the after-tax cash flow projections for each partnership, and (2) a risk-adjusted discount rate consistent with the duration of the expected cash flows for each partnership. The weighted-average discount rates used to value these investments were 7.81% and 8.65% as of December 31, 2014 and 2013, respectively. These inputs and the resulting fair values are updated on a quarterly basis. The following table presents information about our investments measured at fair value on a recurring basis as of December 31, 2014 and 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value (in millions):   Quoted Prices in Active Markets for Identical Assets (Level 1)   Significant Other Observable Inputs (Level 2)   Significant Unobservable Inputs (Level 3)   Total 2014               Marketable securities:               U.S. government and agency debt securities $ 321   $ —   $ —   $ 321 Mortgage and asset-backed debt securities —   89   —   89 Corporate debt securities —   534   —   534 U.S. state and local municipal debt securities —   2   —   2 Other debt and equity securities —   46   —   46 Total marketable securities 321   671   —   992 Other investments 19   —   64   83 Total $ 340   $ 671   $ 64   $ 1,075                   Quoted Prices in Active Markets  for Identical Assets (Level 1)   Significant Other Observable Inputs (Level 2)   Significant Unobservable Inputs (Level 3)   Total 2013               Marketable securities:               U.S. government and agency debt securities $ 353   $ 1   $ —   $ 354 Mortgage and asset-backed debt securities —   75   —   75 Corporate debt securities —   146   —   146 U.S. state and local municipal debt securities —   2   —   2 Other debt and equity securities —   3   —   3 Total marketable securities 353   227   —   580 Other investments 19   —   110   129 Total $ 372   $ 227   $ 110   $ 709 The following table presents the changes in the above Level 3 instruments measured on a recurring basis for the years ended December 31, 2014 and 2013 (in millions).   Marketable Securities   Other Investments   Total Balance on January 1, 2013 $ —   $ 163   $ 163 Transfers into (out of) Level 3 —   —   — Net realized and unrealized gains (losses):           Included in earnings (in investment income) —   (53 )   (53 ) Included in accumulated other comprehensive income (pre-tax) —   —   — Purchases —   —   — Settlements —   —   — Balance on December 31, 2013 $ —   $ 110   $ 110 Transfers into (out of) Level 3 —   —   — Net realized and unrealized gains (losses):           Included in earnings (in investment income) —   (46 )   (46 ) Included in accumulated other comprehensive income (pre-tax) —   —   — Purchases —   —   — Settlements —   —   — Balance on December 31, 2014 $ —   $ 64   $ 64