Derivative Instruments and Other Financial Instruments Used For Hedging - Derivative Instruments by Contract Type (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (Losses) Recorded in Income, Derivative	$ 3	$ 3
Gains (Losses) Recorded in Income, Hedged Liabilities	(8)	(8)
Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (Losses) Recorded in Income, Derivative	3	3
Gains (Losses) Recorded in Income, Hedged Liabilities	$ (8)	$ (8)

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986

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- Definition

Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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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

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