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Debt - Two Thousand Fifteen Credit Facility - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021 | Jul. 01, 2021 | Jun. 30, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total interest expense and commitments fees | $ 11 | $ 12 | $ 33 | $ 34 |  |  |  |
Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total interest expense and commitments fees |  | $ 1 | 1 | $ 2 |  |  |  |
Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Borrowing capacity under Credit Facility | 500 |  | $ 500 |  |  |  |  |
Credit facility, maturity date |  |  | May 12, 2024 |  |  |  |  |
Outstanding borrowings | 0 |  | $ 0 |  |  | $ 0 |  |
Interest rate description |  |  | borrowings under the Credit Facility generally bear interest, at the Company’s option, at a rate per annum equal to either (i) the Eurocurrency Borrowing rate, or the adjusted LIBO rate for the interest period in effect for such borrowing; plus an applicable margin ranging from 1.25% to 2.00% with a London Inter-Bank Offered Rate (“LIBO rate”) floor of 1.00% per annum; or (ii) the Alternate Base Rate Borrowing, which is the greatest of (a) the Prime Rate in effect on such day, (b) the New York Fed Bank Rate in effect on such day plus 1/2 of 1.00% per annum, and (c) the Adjusted LIBO Rate (or LIBO rate multiplied by the Statutory Reserve Rate) for an interest period of one month plus 1.00%; in addition to an applicable margin ranging from 0.25% to 1.00%. In addition, based on the Company’s existing leverage ratio |  |  |  |  |
Credit Facility | Revolving Credit Facility | LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Floor Interest Rate |  |  | 1.00% |  |  |  |  |
Credit Facility | Revolving Credit Facility | Adjusted LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  | Adjusted LIBO Rate (or LIBO rate multiplied by the Statutory Reserve Rate) for an interest period of one month plus 1.00% |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 1.00% |  |  |
Credit Facility | Revolving Credit Facility | New York Fed Bank Rate |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.50% |  |  |  |  |
Borrowings, interest rate description |  |  | effect on such day plus 1/2 of 1.00% per annum, |  |  |  |  |
Credit Facility | Revolving Credit Facility | Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line Of Credit Facility Unused Capacity Commitment Fee Percentage |  |  | 0.15% |  |  |  |  |
Credit Facility | Revolving Credit Facility | Minimum | ABR Spread |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.25% |  |  |  |  |
Credit Facility | Revolving Credit Facility | Minimum | Eurocurrency Spread |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.25% |  |  |  |  |
Credit Facility | Revolving Credit Facility | Maximum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line Of Credit Facility Unused Capacity Commitment Fee Percentage |  |  | 0.30% |  |  |  |  |
Credit Facility | Revolving Credit Facility | Maximum | ABR Spread |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.00% |  |  |  |  |
Credit Facility | Revolving Credit Facility | Maximum | Eurocurrency Spread |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.00% |  |  |  |  |
Credit Facility | Letter of Credit |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Borrowing capacity under Credit Facility | 15 |  | $ 15 |  |  |  |  |
Letters of credit outstanding amount | 4 |  | 4 |  |  | $ 3 |  |
Credit Facility | Borrowings On Same Day Notice |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Borrowing capacity under Credit Facility | $ 40 |  | $ 40 |  |  |  |  |
Credit Facility | Amended 2015 Credit Facility in May 2020 and December 2020 | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Maximum borrowings allowed excluding leverage ratio covenant |  |  |  |  |  |  | $ 200 |
Minimum liquidity required |  |  |  |  |  |  |  | $ 150
Credit Facility, description |  |  | We amended the Credit Facility during 2020 to, among other things: suspend the leverage ratio covenant for quarterly testing of compliance beginning in the second quarter of 2020, replacing it with a minimum liquidity covenant through June 30, 2021 (requiring the Company to maintain $150 million of unrestricted cash, cash equivalents and short-term investments less deferred merchant payables plus available revolver capacity), until the earlier of (a) the first day after June 30, 2021 through maturity on which borrowings and other revolving credit utilizations under the revolving commitments exceed $200 million, and (b) the election of the Company, at which time the leverage ratio covenant will be reinstated (the “Leverage Covenant Holiday”). |  |  |  |  |

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