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Short And Long-Term Debt Maturities Table (Details) - USD ($) $ in Millions	6 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2016	Jun. 30, 2017	Dec. 31, 2015
Maturities of Long-term Debt
Remaining 2016	$ 21
2017	41
2018	52
2019	513
2020	$ 2,105
Long-term Debt Maturities, Years Presented	4 years
Current portion of long-term debt	$ 41			$ 740
Scenario, Forecast | Secured Debt | Term Loan A
Maturities of Long-term Debt
Debt Instrument, Periodic Payment, Principal		$ 11	$ 22
Scenario, Forecast | Secured Debt | Term Loan B
Maturities of Long-term Debt
Debt Instrument, Periodic Payment, Principal		$ 10	$ 19

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The number of years after the current year presented in the debt maturities table.

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Amount of the required periodic payments applied to principal.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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-Publisher FASB
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