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CASH AND INVESTMENTS - Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Cost | ||
| Due in one year or less | $ 33 | |
| Due after one year through three years | 432 | |
| Due after three years through five years | 21 | |
| Due after five years | 93 | |
| Marketable Securities, Debt Maturities, Amortized Cost, Total | 579 | |
| Equity securities | 3 | |
| Marketable Securities, Amortized Cost, Total | 582 | |
| Estimated Fair Value | ||
| Due in one year or less | 33 | |
| Due after one year through three years | 432 | |
| Due after three years through five years | 21 | |
| Due after five years | 91 | |
| Marketable Securities, Debt Maturities, Fair Value, Total | 577 | |
| Equity securities | 3 | |
| Estimated Fair Value | 580 | |
|
Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 709 | 779 |
|
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 372 | 256 |
|
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 227 | 360 |
|
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 110 | 163 |
|
Marketable securities | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 580 | 597 |
|
Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 353 | 237 |
|
Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 227 | 360 |
|
Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Other Long-term Investments | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 129 | 182 |
|
Other Long-term Investments | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 19 | 19 |
|
Other Long-term Investments | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Other Long-term Investments | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 110 | 163 |
|
U.S. government and agency debt securities | Marketable securities | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 354 | 238 |
|
U.S. government and agency debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 353 | 237 |
|
U.S. government and agency debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 1 | 1 |
|
U.S. government and agency debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Mortgage and asset-backed debt securities | Marketable securities | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 75 | 174 |
|
Mortgage and asset-backed debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Mortgage and asset-backed debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 75 | 174 |
|
Mortgage and asset-backed debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Corporate debt securities | Marketable securities | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 146 | 163 |
|
Corporate debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Corporate debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 146 | 163 |
|
Corporate debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
U.S. state and local municipal debt securities | Marketable securities | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 2 | 15 |
|
U.S. state and local municipal debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
U.S. state and local municipal debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 2 | 15 |
|
U.S. state and local municipal debt securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Other debt and equity securities | Marketable securities | Fair Value, Measurements, Recurring
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 3 | 7 |
|
Other debt and equity securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 0 | 0 |
|
Other debt and equity securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | 3 | 7 |
|
Other debt and equity securities | Marketable securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
|
||
| Investments Classified by Contractual Maturity Date [Line Items] | ||
| Investments, Fair Value Disclosure | $ 0 | $ 0 |