CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Statement of Cash Flows [Abstract]
Cash and cash equivalents		$ 53	$ 57	$ 39	$ 191
Restricted cash included in Other long-term assets		8	8	9	8
Total cash, cash equivalents and restricted cash at end of period	[1]	$ 61	$ 65	$ 48	$ 199

[1] The following table reconciles cash, cash equivalents and restricted cash per the statement of cash flows to the balance sheet. The restricted cash balances are primarily due to letters of credit which have been issued to the landlords of leased office space. The terms of the letters of credit primarily extend beyond one year. (in millions)September 30, 2023December 31, 2022September 30, 2022December 31, 2021Cash and cash equivalents$53 $57 $39 $191 Restricted cash included in Other long-term assets8 8 9 8 Total cash, cash equivalents and restricted cash at end of period$61 $65 $48 $199