Financial Instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax losses related to interest rate swaps	$ 0	$ 103	$ 111
Loss on equity method investment transaction	(742)	(989)	2
JDE/Keurig
Derivative Instruments, Gain (Loss) [Line Items]
Loss on equity method investment transaction		29		$ (43)
Net investment hedge contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	3,915	4,551
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	1,850	3,500
Cash Flow Hedges | Net investment hedge contracts
Derivative Instruments, Gain (Loss) [Line Items]
After-tax losses related to interest rate swaps		79
Pre-tax losses related to interest rate swaps		$ 103	$ 111
Cash Flow Hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Expected losses for interest rate cash flow hedges expected to be transferred to earnings during the next 12 months	$ 28
Hedged forecasted transaction period	4 years 8 months
Net Investment Hedging | Net investment hedge contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	$ 3,900