Financial Instruments (Fair Value of Foreign Exchange Contracts) (Details) - Foreign Exchange Contract - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 232	$ 182
Gross amounts not offset in the consolidated balance sheet, derivative assets - financial instruments	(126)	(156)
Gross amounts not offset in the consolidated balance sheet, derivative assets - cash collateral received/pledged	(93)	(23)
Gross amounts not offset in the consolidated balance sheet, derivative assets, total	13	3
Fair value of derivative liabilities	299	1,110
Gross amounts not offset in the consolidated balance sheet, derivative liabilities - financial instruments	(126)	(156)
Gross amounts not offset in the consolidated balance sheet, derivative liabilities - cash collateral received/pledged	(151)	(892)
Gross amounts not offset in the consolidated balance sheet, derivative liabilities, total	22	62
Derivative contracts designated as hedging instruments \| Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	173	130
Derivative contracts designated as hedging instruments \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	34	241
Derivative contracts designated as hedging instruments \| Other assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	22	6
Derivative contracts designated as hedging instruments \| Income taxes and other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	190	605
Derivative contracts not designated as hedging instruments \| Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	37	46
Derivative contracts not designated as hedging instruments \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	75	207
Derivative contracts not designated as hedging instruments \| Other assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Derivative contracts not designated as hedging instruments \| Income taxes and other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 0	$ 57

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