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Financial Instruments - Investment Securities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Equity securities, amortized cost	$ 556		$ 556		$ 579
Equity securities, gross unrealized gains	292		292		455
Equity securities, gross unrealized losses	0		0		(1)
Equity securities, estimated fair value	848		848		1,033
Total, amortized cost	557		557		587
Total, gross unrealized gains	292		292		455
Total, gross unrealized losses	0		0		(1)
Total, estimated fair value	849		849		1,041
Net unrealized losses	(52)	$ (141)	(170)	$ (954)
Non-U.S. debt securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	1		1		8
Debt securities, gross unrealized gains	0		0		0
Debt securities, gross unrealized losses	0		0		0
Debt securities, estimated fair value	$ 1		$ 1		$ 8
Available for sale securities maturity	1 year		1 year		1 year

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