Derivatives - Additional Information (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 11,454,000,000			$ 11,454,000,000		$ 11,224,000,000
Derivative, Collateral, Right to Reclaim Cash	1,000,000			1,000,000		2,000,000
Derivative, Fair Value, Net	86,000,000			86,000,000		(42,000,000)
Cash collateral held	101,000,000			101,000,000		7,000,000
Securities Received as Collateral	3,000,000			3,000,000		5,000,000
Collateral Securities Repledged, Delivered, or Used	0			0		0
Collateral Pledged
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Collateral, Right to Reclaim Cash	16,000,000			16,000,000		12,000,000
Asset Pledged as Collateral [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Collateral, Right to Reclaim Securities	8,000,000			8,000,000		48,000,000
Over the Counter [Member] | Asset Pledged as Collateral [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Collateral, Right to Reclaim Securities	38,000,000			38,000,000		82,000,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loss on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring	0		$ 0	0	$ 0
AOCI Attributable to Parent [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months				3,000,000
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	8,760,000,000			8,760,000,000		8,447,000,000
Derivative, Fair Value, Net	(8,000,000)			(8,000,000)		(48,000,000)
Non-qualifying foreign currency derivatives	(19,000,000)		10,000,000	42,000,000	16,000,000
Not Designated as Hedging Instrument | Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	6,600,000,000			6,600,000,000		$ 7,200,000,000
Not Designated as Hedging Instrument | Commodity Option
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Cost of Hedge		$ 10,000,000
Non-qualifying foreign currency derivatives	$ 0		$ 0	$ 14,000,000	$ 0