Income Taxes, Narrative (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Narrative (Textual)
Decrease in valuation allowance		$ 28
Liability for unrecognized tax benefits due to uncertainties with respect to sustaining refund claims		239	$ 863
Tax refund receivable recorded in connection with refund claims		26	586
Unrecognized tax benefits if recognized that would reduce the effective tax rate		190	708
Amount of decrease in unrecognized tax benefits reasonably possible in next 12 months		112
Income tax benefit, tax NOL carryback provided for under CARES Act	[1]		56	$ 360
Cumulative undistributed earnings of foreign subsidiaries		7,600
Foreign earnings repatriated		1,000
Foreign earnings repatriated, accrued withholding tax		$ 51
U.S. [Member]
Income Tax Narrative (Textual)
Income tax benefit, tax NOL carryback provided for under CARES Act	[1]		56	360
U.S. [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Narrative (Textual)
Liability for unrecognized tax benefits due to uncertainties with respect to sustaining refund claims			525
Tax refund receivable recorded in connection with refund claims			525
Income tax benefit, tax NOL carryback provided for under CARES Act			$ 56	$ 360

[1] See “CARES Act” on page 123 for a discussion of significant changes in tax law in the U.S. that were enacted in 2020.