Equity Incentive Plans- Nonvested awards (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Equity Incentive Plans
Unrecognized compensation	$ 83
Nonqualified stock options
Equity Incentive Plans
Unrecognized compensation	$ 16
Weighted average vesting period	1 year 7 months 28 days
Restricted stock units
Equity Incentive Plans
Unrecognized compensation	$ 47
Weighted average vesting period	1 year 10 months 24 days
Performance stock awards
Equity Incentive Plans
Unrecognized compensation	$ 20
Weighted average vesting period	1 year 6 months 18 days

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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

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