Income Taxes - Valuation Allowances Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Carryforwards	$ 285	$ 289
Valuation allowance	176	276	$ 235	$ 243
Deferred tax assets, net operating losses	235
Deferred tax assets, net operating losses, expiring within 5 years	82
Deferred tax assets, net operating losses, expiring after 5 years	24
Deferred tax assets, net operating losses, no expiration	129
Deferred tax assets, tax credit carryforwards	50
Deferred tax assets, tax credit carryforwards, expiring within 5 years	3
Deferred tax assets, tax credit carryforwards, expiring after 5 years	40
Deferred tax assets, tax credit carryforwards, no expiration	7
Accrued income taxes	586
Undistributed earnings of foreign subsidiaries	4,000
Unrecognized tax benefits	$ 304	$ 325	$ 387	$ 452