Derivatives - Interest-Rate Swaps (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Derivative [Line Items]
Net cash payments related to settlements	$ (79)	$ (45)
Interest Rate Swap, 6.709%
Derivative [Line Items]
Notional Principal Amount	$ 275
Weighted-Average Interest Rate	6.709%
Interest Rate Swap, 6.445%
Derivative [Line Items]
Notional Principal Amount	$ 450
Weighted-Average Interest Rate	6.445%
Interest Rate Swaps
Derivative [Line Items]
Net cash payments related to settlements	$ 23
Collateral paid with respect to interest rate swap agreements	$ 102

Derivative Instrument, Collateral Returned (Paid)

No definition available.

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- Definition

Average fixed interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

+ Details

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- Definition

The net cash outflow or inflow from derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

+ References

No definition available.

+ Details

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