Financial Instruments - Economic Hedges (Details) - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	$ 242	$ 200
Currency exchange contracts | Intercompany loans and forecasted interest payments | Interest and other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	(11)	70
Currency exchange contracts | Forecasted transactions | Interest and other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	21	(16)
Currency exchange contracts | Forecasted transactions | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	(7)	50
Currency exchange contracts | Forecasted transactions | Selling, general and administrative expenses
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	2	2
Commodity contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	237	94
Equity method investment contracts | Gain on equity method investment transactions
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives instruments, pre-tax gains/(losses) recognized in earnings	$ 0	$ 0