Fair Value Measurements (Details) - USD ($) $ in Millions |
Jun. 30, 2016 |
Dec. 31, 2015 |
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Investment | ||
Cash | $ 112 | $ 71 |
Cash equivalents: | ||
Cash and cash equivalents, adjusted cost | 2,008 | 286 |
Cash and cash equivalents, fair value disclosure | 2,008 | 286 |
Restricted Cash, adjusted cost | 7 | 23 |
Restricted Cash, Fair Value | 7 | 23 |
U.S. and Canadian government obligations | ||
Cash equivalents: | ||
Cash equivalents, adjusted cost | 1,873 | 190 |
Cash equivalents, fair value | 1,873 | 190 |
Other debt securities | ||
Cash equivalents: | ||
Cash equivalents, adjusted cost | 23 | 25 |
Cash equivalents, fair value | 23 | 25 |
Nonqualified employee benefit trusts | ||
Cash equivalents: | ||
Available-for-sale securities, adjusted cost | 18 | 18 |
Available-for-sale securities, gross unrealized gain | 1 | 1 |
Available-for-sale securities, fair value | $ 19 | $ 19 |
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- Definition Represents the adjusted cost of cash equivalents, that are considered as available-for-sale and recorded at fair value. No definition available.
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- Definition Cash Equivalents, at Fair Value No definition available.
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- Definition Cash and Cash Equivalents, Adjusted Cost No definition available.
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- Definition Represents fair value of restricted cash. No definition available.
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- Definition Line items represent reporting 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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