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Accumulated Other Comprehensive Loss - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 24, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Estimate of gain related to foreign currency exchange contracts during the next 12 months		$ 3
Fair market value adjustment on cash flow hedges, net of income tax benefit	$ 183	(134)	$ (5)
Estimated interest expense related to settled interest rate hedge contracts during the next twelve months		21
Foreign currency translation adjustment		62
Foreign currency forward exchange contracts | Indian Rupee
Accumulated Other Comprehensive Income (Loss) [Line Items]
Notional amount of derivatives		178	$ 202
Total fair value of cash flow hedge derivatives		$ 4
Treasury Lock
Accumulated Other Comprehensive Income (Loss) [Line Items]
Derivative liability, notional amount				$ 5,000

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Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), After Reclassification And Tax

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Net fair value of all derivative instruments designated as cash flow hedging instruments, which is ordinarily reflected within other comprehensive income.

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Nominal or face amount used to calculate payments on the derivative liability.

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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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