Restructuring and Related Activities (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost					$ 55
Disposal Group, Including Discontinued Operation, Assets	$ 0		$ 36	$ 0	36
Disposal Group, Including Discontinued Operation, Operating Income (Loss)		$ 4
Cash Proceeds from Sale		$ 1,340
Total shareholder’s interest	12,398		15,567	12,398	15,567	$ 16,389	$ 16,625
Restructuring and Related Cost, Incurred Cost					55
Stockholders' interest attributable to noncontrolling interest	22		0	22	$ 0
Parent Company
Restructuring Cost and Reserve [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	14		$ 33
Employee Separation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges				18
Foreign Currency Translation Adjustment
Restructuring Cost and Reserve [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	454			454
Future event
Restructuring Cost and Reserve [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ 100			$ 100