Acquisitions and Dispositions (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2017 |
Dec. 31, 2016 |
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Gain (Loss) on Dispositions, Net | $ (18) | |
| Buy Seasons | Disposed of by Sale | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Gain (Loss) on Dispositions, Net | (18) | |
| Disposal Group, Including Discontinued Operation, Revenue | 13 | $ 52 |
| Disposal Group Net Earnings Loss | $ (2) | $ (8) |
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- Definition Disposal Group Net Earnings Loss No definition available.
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- Definition Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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