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Stock-Based Compensation - Schedule of pre-tax compensation expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Stock-based compensation
Pre-tax compensation expense	$ 12	$ 12	$ 39	$ 42
Restricted stock units
Stock-based compensation
Pre-tax compensation expense	6	4	25	23
Performance restricted stock units
Stock-based compensation
Pre-tax compensation expense	3	4	4	6
Stock options
Stock-based compensation
Pre-tax compensation expense	1	1	6	5
Long-term stock awards
Stock-based compensation
Pre-tax compensation expense	2	3	4	6
Phantom stock awards
Stock-based compensation
Pre-tax compensation expense	$ 0	$ 0	$ 0	$ 2

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

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+ References

No definition available.

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