Income Taxes - Possible Changes of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Reasonably possible change in unrecognized tax benefits
Foreign tax credit carryovers	$ 149	$ 161
Unused foreign tax credits expiring in current year through following nine years	71
Unused foreign tax credits carried over indefinitely	78
Operating and capital loss carryforwards with indefinite life	189
Operating and capital loss carryforwards expiring in current year through following 19 years	95
Unused research tax credits expiring in current year through following 18 years	$ 22
Period during which unrecognized tax benefits are reasonably possible of being settled as a result of audit settlements or statute expirations	12 months
Maximum
Reasonably possible change in unrecognized tax benefits
Reasonably possible decrease in unrecognized tax benefits related to audit settlements or statute expirations	$ 30