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Short And Long-Term Debt Schedule of Debt (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Feb. 19, 2021 | Feb. 05, 2021 | Feb. 04, 2021 | Jan. 11, 2021 | Dec. 31, 2019 | Feb. 28, 2018
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 3,239 |  |  |  |  |  |  |
Securitization obligations |  | 106 |  |  |  |  |  | $ 206 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 32 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Total Short-Term & Long-Term Debt |  | 3,207 |  |  |  |  |  | 3,445 |
Securitization obligations |  | $ 106 |  |  |  |  |  | 206 |
LIBOR |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Description of variable interest rate basis |  | LIBOR |  |  |  |  |  |  |
ABR |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Description of variable interest rate basis |  | ABR |  |  |  |  |  |  |
Securitization obligation |  |  |  |  |  |  |  |  |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | $ 0 |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  | 0 | [1],[2] |  |  |  |  | 190 |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  | 0 | [1],[2] |  |  |  |  | 190 |
Line of credit facility borrowing capacity |  | 1,425 |  |  |  |  |  |  |
Long-term Line of Credit |  | $ 0 | [1],[2] |  |  |  |  | 190 |
Revolving Credit Facility | Line of Credit | LIBOR | Less than 2.50 to 1.00 but greater than or equal to 2.00 to 1.00 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate |  | 2.00% |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit | ABR | Less than 2.50 to 1.00 but greater than or equal to 2.00 to 1.00 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate |  | 1.00% |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit | Subsequent Event |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  |  |  | $ 0 |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  |  |  | 0 |  |  |  |  |
Long-term Line of Credit |  |  |  | 0 |  |  |  |  |
Revolving Credit Facility | Letter of Credit |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  | $ 42 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  | 42 |  |  |  |  |  |  |
Long-term Line of Credit |  | $ 42 |  |  |  |  |  |  |
Revolving Credit Facility | Letter of Credit | Subsequent Event |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  |  |  | 42 |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  |  |  | 42 |  |  |  |  |
Long-term Line of Credit |  |  |  | $ 42 |  |  |  |  |
Term Loan B | LIBOR |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate |  | 2.25% |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate, floor |  | 0.75% |  |  |  |  |  |  |
Term Loan B | ABR |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate |  | 1.25% |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate, floor |  | 1.75% |  |  |  |  |  |  |
Term Loan B | Secured Debt |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 1,048 | [3] |  |  |  |  | 1,058 | $ 1,080
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net | [3] | 12 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 1,036 | [3] |  |  |  |  | 1,045 |
Annual percentage of original principal amount for quarterly amortization payments |  | 1.00% |  |  |  |  |  |  |
Term Loan A | Secured Debt |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 684 | [4] |  |  |  |  | 717 | $ 750
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net | [4] | 3 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 681 | [4] |  |  |  |  | 714 |
Term Loan A | Secured Debt | June 2018 to March 2020 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Quarterly percentage of original principal amount for quarterly amortization payments |  | 0.625% |  |  |  |  |  |  |
Term Loan A | Secured Debt | June 2020 to March 2021 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Quarterly percentage of original principal amount for quarterly amortization payments |  | 1.25% |  |  |  |  |  |  |
Term Loan A | Secured Debt | June 2021 to March 2022 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Quarterly percentage of original principal amount for quarterly amortization payments |  | 1.875% |  |  |  |  |  |  |
Term Loan A | Secured Debt | June 2022 to February 2023 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Quarterly percentage of original principal amount for quarterly amortization payments |  | 2.50% |  |  |  |  |  |  |
Term Loan A | Secured Debt | LIBOR | Less than 2.50 to 1.00 but greater than or equal to 2.00 to 1.00 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate |  | 2.00% |  |  |  |  |  |  |
Term Loan A | Secured Debt | ABR | Less than 2.50 to 1.00 but greater than or equal to 2.00 to 1.00 |  |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Debt Instrument, basis spread on variable rate |  | 1.00% |  |  |  |  |  |  |
Term Loan A | Secured Debt | Subsequent Event |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  |  | $ 434 |  |
7.625% Senior Secured Second Lien Notes | Secured Debt |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 550 |  |  |  |  |  | 0 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 10 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 540 |  |  |  |  |  | 0 |
Interest Rate |  | 7.625% |  |  |  |  |  |  |
4.875% Senior Notes | Senior Notes |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 407 |  |  |  |  |  | 407 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 1 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 406 |  |  |  |  |  | 405 |
Interest Rate |  | 4.875% |  |  |  |  |  |  |
9.375% Senior Notes | Senior Notes |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 550 |  |  |  |  |  | 550 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 6 |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 544 |  |  |  |  |  | 543 |
Interest Rate |  | 9.375% |  |  |  |  |  |  |
Apple Ridge Funding LLC | Securitization obligation |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Securitization obligations |  | $ 102 | [5],[6] |  |  |  |  | 195 |
Net Amount |  |  |  |  |  |  |  |  |
Securitization obligations |  | 102 | [5],[6] |  |  |  |  | 195 |
Total capacity, securitization obligations |  | 200 |  |  |  |  |  |  |
Available capacity, debt |  | 98 |  |  |  |  |  |  |
Cartus Financing Limited | Securitization obligation |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Securitization obligations |  | 4 | [6],[7] |  |  |  |  | 11 |
Net Amount |  |  |  |  |  |  |  |  |
Securitization obligations |  | 4 | [6],[7] |  |  |  |  | $ 11 |
Total capacity, securitization obligations |  | 21 |  |  |  |  |  |  |
Available capacity, debt |  | $ 17 |  |  |  |  |  |  |
5.75% Senior Notes | Senior Notes | Subsequent Event |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  | $ 900 | $ 300 | $ 600 |  |
Net Amount |  |  |  |  |  |  |  |  |
Interest Rate |  |  |  |  |  |  | 5.75% |  |
[1] | As of December 31, 2020, the $1,425 million Revolving Credit Facility had no outstanding borrowings and $42 million of outstanding undrawn letters of credit. The Revolving Credit Facility expires in February 2023 but is classified on the balance sheet as current due to the revolving nature and terms and conditions of the facility. See Note 20, "Subsequent Events", for a description of the January and February issuances of 5.75% Senior Notes and amendments to the Senior Secured Credit Facility and Term Loan A Facility. On February 19, 2021, the Company had no outstanding borrowings under the Revolving Credit Facility and $42 million of outstanding undrawn letters of credit.
[2] | Interest rates with respect to revolving loans under the Senior Secured Credit Facility at December 31, 2020 were based on, at the Company's option, (a) adjusted London Interbank Offering Rate ("LIBOR") plus an additional margin or (b) JP Morgan Chase Bank, N.A.'s prime rate ("ABR") plus an additional margin, in each case subject to adjustment based on the then current senior secured leverage ratio. Based on the previous quarter's senior secured leverage ratio, the LIBOR margin was 2.00% and the ABR margin was 1.00% for the three months ended December 31, 2020. See Note 20, "Subsequent Events", for a description of the January and February issuances of 5.75% Senior Notes and amendments to the Senior Secured Credit Facility and Term Loan A Facility.
[3] | The Term Loan B Facility provides for quarterly amortization payments totaling 1% per annum of the original principal amount. The interest rate with respect to term loans under the Term Loan B Facility is based on, at the Company’s option, (a) adjusted LIBOR plus 2.25% (with a LIBOR floor of 0.75%) or (b) ABR plus 1.25% (with an ABR floor of 1.75%). See Note 20, "Subsequent Events", for a description of the January and February issuances of 5.75% Senior Notes and the January 2021 amendments to the Senior Secured Credit Facility and Term Loan A Facility.
[4] | The Term Loan A Facility provides for quarterly amortization payments, equal to a percentage of the original principal amount of the Term Loan A, as follows: 0.625% per quarter from June 30, 2018 to March 31, 2020; 1.25% per quarter from June 30, 2020 to March 31, 2021; 1.875% per quarter from June 30, 2021 to March 31, 2022; and 2.50% per quarter for periods ending on or after June 30, 2022, with the balance of the Term Loan A Facility due at maturity on February 8, 2023. The interest rates with respect to the Term Loan A Facility are based on, at the Company's option, (a) adjusted LIBOR plus an additional margin or (b) ABR plus an additional margin, in each case subject to adjustment based on the then current senior secured leverage ratio. Based on the previous quarter's senior secured leverage ratio, the LIBOR margin was 2.00% and the ABR margin was 1.00% for the three months ended December 31, 2020. See Note 20, "Subsequent Events", for a description of the January and February issuances of 5.75% Senior Notes and amendments to the Senior Secured Credit Facility and Term Loan A Facility.
[5] | As of December 31, 2020, the Company had $200 million of borrowing capacity under the Apple Ridge Funding LLC securitization program leaving $98 million of available capacity.
[6] | Available capacity is subject to maintaining sufficient relocation related assets to collateralize these securitization obligations.
[7] | Consists of a £10 million revolving loan facility and a £5 million working capital facility. As of December 31, 2020, the Company had $21 million of borrowing capacity under the Cartus Financing Limited securitization program leaving $17 million of available capacity.

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