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Equity - Share-based Payments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based compensation expense
Pre-tax compensation expense	$ 9	$ 7
Income tax benefit	(1)	(1)
Total share-based compensation expense, net of income taxes	8	6
Stock options
Share-based compensation expense
Pre-tax compensation expense	1	1
Income tax benefit	0	0
Total share-based compensation expense, net of income taxes	1	1
Restricted Stock Units ("RSUs") | Employee
Share-based compensation expense
Pre-tax compensation expense	4	3
Income tax benefit	(1)	0
Total share-based compensation expense, net of income taxes	3	3
Performance shares and other share-based awards
Share-based compensation expense
Pre-tax compensation expense	4	3
Income tax benefit	0	(1)
Total share-based compensation expense, net of income taxes	$ 4	$ 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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+ References

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+ References

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-SubTopic 10
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