Derivative Financial Instruments - Schedule of Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 20,146
Asset Fair Value
Asset Fair Value	80
Less: Gross amounts offset in the Consolidated Balance Sheets, Asset Fair Value	0
Pension assets	80	$ 3
Less: Amounts subject to master netting agreements, Asset Fair Value	(8)
Less: Cash collateral pledged(received) subject to master netting agreements	(61)
Total net derivative fair value, Asset Fair Value	11
Liability Fair Value
Liability Fair Value	(308)
Less: Gross amounts offset in the Consolidated Balance Sheets, Liability Fair Value	0
Deferred taxes	(308)	$ (1)
Less: Amounts subject to master netting agreements, Asset Liability Value	8
Less: Cash collateral pledged(received) subject to master netting agreements	0
Total net derivative fair value, Liability Fair Value	(300)
Variation margin, amount reducing derivative asset	286
Variation margin, amount reducing derivative liability	21
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	20,146
Asset Fair Value
Asset Fair Value	80
Liability Fair Value
Liability Fair Value	(308)
Not Designated as Hedging Instrument | Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	19,174
Asset Fair Value
Asset Fair Value	76
Liability Fair Value
Liability Fair Value	(305)
Not Designated as Hedging Instrument | Foreign currency forward contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	176
Asset Fair Value
Asset Fair Value	4
Liability Fair Value
Liability Fair Value	(3)
Not Designated as Hedging Instrument | Other contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	796
Asset Fair Value
Asset Fair Value	0
Liability Fair Value
Liability Fair Value	$ 0