Stock-Based Compensation - Summary of Share-Based Compensation Expense Income Tax Benefit Awards Issued Under Incentive Plans (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 16	$ 23
Income tax benefit	1	5
Restricted stock units - employees and non-employee directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	7	8
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	4	5
Performance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	5	6
Deferred performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 0	$ 4

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

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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