Income Taxes - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 27, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Net income tax payments/(refunds)		$ (1,317)	$ (1,480)	$ 37
Deferred tax assets		12,301	11,258
Deferred tax liabilities		$ 9,306	$ 8,976
U.S. federal statutory tax	35.00%	21.00%	21.00%	21.00%
Valuation allowance		$ 3,162	$ 2,423
Valuation allowance, deferred tax asset, increase (decrease), amount		739
Federal, state, and local, income tax expense (benefit), increase (decrease), amount		18
Unrecognized tax benefits that would affect the effective tax rate, if recognized		878	$ 790	$ 734
Other Comprehensive Income (Loss)
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Valuation allowance		478
Continuing Operations
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Valuation allowance		$ 1,199