Financial Instruments - Balance Sheet (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Document Period End Date	Mar. 31, 2020
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax	$ 46	$ 4
Gain (loss) expected to be reclassified in one year or less	(3)
Foreign currency
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax	(3)	0
Gain (loss) expected to be reclassified in one year or less	(3)
Swaption
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax	1	0
Gain (loss) expected to be reclassified in one year or less	0
Designated as Hedging Instrument [Member] | Foreign currency | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	2	0
Designated as Hedging Instrument [Member] | Foreign currency | Accounts Payable and Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	4	1
Designated as Hedging Instrument [Member] | Foreign currency | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	30	3
Designated as Hedging Instrument [Member] | Foreign currency | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	8
Designated as Hedging Instrument [Member] | Commodity contracts | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Designated as Hedging Instrument [Member] | Commodity contracts | Accounts Payable and Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Designated as Hedging Instrument [Member] | Swaption | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1	0
Designated as Hedging Instrument [Member] | Swaption | Accounts Payable and Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Not Designated as Hedging Instrument [Member] | Foreign currency | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1	0
Not Designated as Hedging Instrument [Member] | Foreign currency | Accounts Payable and Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Net investment hedge | Foreign currency
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax	6	5
Gain (loss) expected to be reclassified in one year or less	0
Net investment hedge | Cross currency interest rate contract
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax	51	16
Gain (loss) expected to be reclassified in one year or less	0
Net investment hedge | Foreign currency denominated debt designated as a net investment hedge [Member]
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax	(9)	$ (17)
Gain (loss) expected to be reclassified in one year or less	$ 0