Financial Instruments - Investments - Debt Securities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Debt securities, amortized cost	$ 21,556	$ 24,835
Debt securities, gross unrealized gains	304	14
Debt securities, gross unrealized losses	(53)	(265)
Debt securities, fair value	21,807	24,584
Debt securities maturities, within 1 year, fair value	21,407
Debt securities maturities, over 1 to 5 years, fair value	375
Debt securities maturities, over 5 years, fair value	25
Government and agency debt - non-U.S. [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Available-for-sale debt securities, amortized cost	15,946	18,032
Available-for-sale debt securities, gross unrealized gain	297	13
Available-for-sale debt securities, gross unrealized loss	(48)	(263)
Available-for-sale securities, debt maturities	16,195	17,783
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-sale securities, debt maturities, within 1 year, fair value	15,915
Available-for-sale securities, debt maturities, over 1 to 5 years, fair value	280
Available-for-sale securities, debt maturities, over 5 years, fair value	0
Available-for-sale securities, debt maturities	16,195	17,783
Debt Securities, Held-to-maturity, Maturity [Abstract]
Held-to-maturity securities, amortized cost	1,542	1,102
Held-to-maturity securities, gross unrealized gains	0	0
Held-to-maturity securities, gross unrealized losses	0	0
Held-to-maturity securities, fair value	1,542	1,102
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Held-to-maturity securities, debt maturities, within 1 year, fair value	1,538
Held-to-maturity securities, debt maturities, over 1 to 5 years, fair value	3
Held-to-maturity securities, debt maturities, over 5 years, fair value	1
Government and agency - U.S. [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Available-for-sale debt securities, amortized cost	1,313	4,056
Available-for-sale debt securities, gross unrealized gain	0	0
Available-for-sale debt securities, gross unrealized loss	0	(1)
Available-for-sale securities, debt maturities	1,313	4,055
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-sale securities, debt maturities, within 1 year, fair value	1,313
Available-for-sale securities, debt maturities, over 1 to 5 years, fair value	0
Available-for-sale securities, debt maturities, over 5 years, fair value	0
Available-for-sale securities, debt maturities	1,313	4,055
Corporate and Other [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Available-for-sale debt securities, amortized cost	1,584	698
Available-for-sale debt securities, gross unrealized gain	7	0
Available-for-sale debt securities, gross unrealized loss	(4)	(1)
Available-for-sale securities, debt maturities	1,586	697
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-sale securities, debt maturities, within 1 year, fair value	1,514
Available-for-sale securities, debt maturities, over 1 to 5 years, fair value	72
Available-for-sale securities, debt maturities, over 5 years, fair value	0
Available-for-sale securities, debt maturities	1,586	697
Time deposits and other [Member]
Debt Securities, Held-to-maturity, Maturity [Abstract]
Held-to-maturity securities, amortized cost	1,171	947
Held-to-maturity securities, gross unrealized gains	0	0
Held-to-maturity securities, gross unrealized losses	0	0
Held-to-maturity securities, fair value	1,171	$ 947
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Held-to-maturity securities, debt maturities, within 1 year, fair value	1,127
Held-to-maturity securities, debt maturities, over 1 to 5 years, fair value	20
Held-to-maturity securities, debt maturities, over 5 years, fair value	$ 24

Available-for-sale Securities, Debt Maturities, After Year Five, Fair Value

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Debt Securities, Accumulated Gross Unrealized Gain

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Debt Securities Maturities, Next Twelve Months, Fair Value

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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