Supplementary Information for Certain Balance Sheet Accounts - Prepaid and Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepayments and accrued income	$ 124	$ 132
Deferred contract costs	67	71
Derivatives and investments	7	43
Deferred compensation plan assets	11	16
Corporate income and other taxes	77	89
Acquired renewal commissions receivable	8	9
Other current assets	43	54
Total prepaid and other current assets	$ 337	$ 414