Income Taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2019
Operating and capital loss carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount		$ 20
Foreign Earnings Repatriated	$ 3,900
Deferred Tax Assets, Tax Deferred Expense	410
Tax Credit Carryforward, Valuation Allowance		$ (111)
Operating Loss and Tax Credit Carryforward, Amount	2,242
Operating Loss Carryforwards	181		$ 176
Operating Loss and Tax Credit Carryforward, Valuation Allowance	(352)
Foreign [Member] | Indefinite
Operating and capital loss carryforwards [Line Items]
Tax Credit Carryforward, Amount	14
Tax Credit Carryforward, Valuation Allowance	(3)
Operating Loss Carryforwards	253
Deferred Tax Assets, Operating Loss Carryforwards	75
Operating Loss Carryforwards, Valuation Allowance	(51)
Deferred Tax Assets, Tax Credit Carryforwards	3
Foreign [Member] | 2021 - 2030
Operating and capital loss carryforwards [Line Items]
Operating Loss Carryforwards	32
Deferred Tax Assets, Operating Loss Carryforwards	10
Operating Loss Carryforwards, Valuation Allowance	(10)
Foreign [Member] | 2023 - 2030
Operating and capital loss carryforwards [Line Items]
Tax Credit Carryforward, Amount	220
Tax Credit Carryforward, Valuation Allowance	(220)
Deferred Tax Assets, Tax Credit Carryforwards	220
State and Local Jurisdiction [Member] | Indefinite
Operating and capital loss carryforwards [Line Items]
Tax Credit Carryforward, Amount	361
Tax Credit Carryforward, Valuation Allowance	(15)
Deferred Tax Assets, Tax Credit Carryforwards	15
State and Local Jurisdiction [Member] | 2021 - 2039
Operating and capital loss carryforwards [Line Items]
Operating Loss Carryforwards	1,268
Deferred Tax Assets, Operating Loss Carryforwards	63
Operating Loss Carryforwards, Valuation Allowance	(48)
State and Local Jurisdiction [Member] | 2023
Operating and capital loss carryforwards [Line Items]
Tax Credit Carryforward, Amount	8
Tax Credit Carryforward, Valuation Allowance	(5)
Deferred Tax Assets, Tax Credit Carryforwards	6
Domestic Tax Authority | 2035 - 2036
Operating and capital loss carryforwards [Line Items]
Operating Loss Carryforwards	25
Deferred Tax Assets, Operating Loss Carryforwards	5
Operating Loss Carryforwards, Valuation Allowance	0
Domestic Tax Authority | Indefinite
Operating and capital loss carryforwards [Line Items]
Operating Loss Carryforwards	61
Deferred Tax Assets, Operating Loss Carryforwards	13
Operating Loss Carryforwards, Valuation Allowance	$ 0