Derivative and Hedging Instruments - Gain (Loss) Recognized in Income for the Contracts to Purchase and Sell Foreign Currency Summary (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Foreign Exchange Risk Management
Gain (loss) for contracts to purchase and sell foreign currency	$ (136)
General and administrative | Foreign exchange contracts
Foreign Exchange Risk Management
Gain (loss) for contracts to purchase and sell foreign currency		$ (10)	$ 40	$ (39)