Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

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Basis of Presentation (Details) - Buy Seasons - Disposed of by Sale
$ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Disposal Group Revenue $ 6
Disposal Group Net Earnings Loss $ (1)