Recent Accounting Pronouncements - Recasting Restricted Cash (Details) - USD ($) $ in Millions |
Mar. 31, 2018 |
Dec. 31, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
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| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||
| Cash, cash equivalents and restricted cash | $ 656 | $ 695 | $ 771 | $ 659 |
| ASU 2016-18 | Restatement Adjustment | ||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||
| Cash, cash equivalents and restricted cash | $ 4 | $ 5 |
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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. 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://www.xbrl.org/2003/role/presentationRef
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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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