CASH AND INVESTMENTS - Additional Information (Detail) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Gain (Loss) on Securities [Line Items] | |||
| Marketable securities pledged as collateral | $ 587,000,000 | $ 579,000,000 | |
| Debt Securities, Trading, and Equity Securities, FV-NI | 139,000,000 | 168,000,000 | |
| Gross realized gains on sales of marketable securities | $ 1,000,000 | ||
| Gross realized losses on sales of marketable securities | 4,000,000 | 2,000,000 | 1,000,000 |
| Impairment charge | 0 | 0 | $ 0 |
| Investments and Restricted Cash | 170,000,000 | 483,000,000 | |
| Variable Life Insurance Policy [Member] | |||
| Gain (Loss) on Securities [Line Items] | |||
| Investments and Restricted Cash | 19,000,000 | ||
| cash held in escrow [Member] | |||
| Gain (Loss) on Securities [Line Items] | |||
| Restricted Cash and Cash Equivalents, Noncurrent | $ 9,000,000 | $ 15,000,000 | |
| Measurement Input, Discount Rate [Member] | |||
| Gain (Loss) on Securities [Line Items] | |||
| Weighted average discount rate | 8.16% | 7.56% | |
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- Definition Marketable Securities, Gross Realized Gains No definition available.
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- Definition Marketable Securities, Gross Realized Losses No definition available.
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- Definition Other Non-current Investments, Measurement Input No definition available.
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- Definition Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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