Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Derivatives (Details) - USD ($) $ in Millions	3 Months Ended
Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	May 30, 2018
Derivative [Line Items]
Debt Instrument, Fair Value Disclosure	$ 400		$ 388
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	7
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	9		23
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	5	$ (3)
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	1	1
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1
Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	250
Currency Swap [Member]
Derivative [Line Items]
Derivative, Fair Value, Net			(16)
Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	0
Designated as Hedging Instrument [Member] \| Liability [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	1		1
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax		1
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(2)	1
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	0	0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	1
Derivative Liability	(4)		$ (2)
Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	7	(6)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(1)
Derivative, Fair Value, Net	(10)
Cost of Sales [Member] \| Not Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	1	1
Cost of Sales [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	0	0
Cost of Sales [Member] \| Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ 0	$ 0
Currency Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount				$ 250