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Short And Long-Term Debt Schedule of Debt (Details) £ in Millions, $ in Millions | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) | Oct. 31, 2018 USD ($) | Sep. 30, 2018 GBP (£) | Feb. 28, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jan. 31, 2017 USD ($)
Principal Amount |  |  |  |  |  |  |  |
Long-term debt principal amount | [1] | $ 3,827 |  |  |  |  |  |
Securitization obligations outstanding |  | 264 |  |  |  |  | $ 194 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net | [1] | 30 |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt | [1] | 3,797 |  |  |  |  |  |
Securitization obligations outstanding |  | 264 |  |  |  |  | 194 |
Letter of Credit, borrowing capacity |  | $ 125 |  |  |  |  |  |
LIBOR |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Description of variable interest rate basis |  | LIBOR |  |  |  |  |  |
ABR |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Description of variable interest rate basis |  | ABR |  |  |  |  |  |
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% |  |  | 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% |  |  | 1.75% |  |  |
Unsecured Letter of Credit Facility |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Interest Rate |  | 3.33% |  |  | 3.33% |  |  |
Letter of Credit, borrowing capacity |  | $ 66 |  |  |  |  | 74 |
Outstanding letters of credit |  | 64 |  |  |  |  | 69 |
Secured Debt | Term Loan B |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Long-term debt principal amount |  | 1,072 | [2] |  |  | $ 1,080 | 1,083 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net | [2] | 16 |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 1,056 | [2] |  |  |  | 1,063 |
Annual percentage of original principal amount for quarterly amortization payments |  | 1.00% |  |  | 1.00% |  |  |
Secured Debt | Term Loan A |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Long-term debt principal amount |  | $ 741 | [3] |  |  | 750 | 391 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net | [3] | 5 |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 736 | [3] |  |  |  | 390 |
Secured Debt | 2018 | Term Loan A |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Annual percentage of original principal amount for quarterly amortization payments |  | 2.50% |  |  | 2.50% |  |  |
Secured Debt | 2019 | Term Loan A |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Annual percentage of original principal amount for quarterly amortization payments |  | 2.50% |  |  | 2.50% |  |  |
Secured Debt | 2020 | Term Loan A |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Annual percentage of original principal amount for quarterly amortization payments |  | 5.00% |  |  | 5.00% |  |  |
Secured Debt | 2021 | Term Loan A |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Annual percentage of original principal amount for quarterly amortization payments |  | 7.50% |  |  | 7.50% |  |  |
Secured Debt | 2022 | Term Loan A |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Annual percentage of original principal amount for quarterly amortization payments |  | 10.00% |  |  | 10.00% |  |  |
Secured Debt | Less than or equal to 3.50 to 1.00 but greater than or equal to 2.50 to 1.00 | Term Loan A | LIBOR |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.25% |  |  |  |  |  |
Secured Debt | Less than or equal to 3.50 to 1.00 but greater than or equal to 2.50 to 1.00 | Term Loan A | ABR |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.25% |  |  |  |  |  |
Senior Notes | 4.50% Senior Notes |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Long-term debt principal amount |  | $ 450 |  |  |  |  | 450 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 3 |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 447 |  |  |  |  | 444 |
Interest Rate |  | 4.50% |  |  | 4.50% |  |  |
Senior Notes | 5.25% Senior Notes |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Long-term debt principal amount |  | $ 550 |  |  |  |  | 550 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 3 |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 547 |  |  |  |  | 546 |
Interest Rate |  | 5.25% |  |  | 5.25% |  |  |
Senior Notes | 4.875% Senior Notes |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Long-term debt principal amount |  | $ 500 |  |  |  |  | 500 |
Unamortized Discount and Debt Issuance Costs |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 3 |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, long-term debt |  | $ 497 |  |  |  |  | 496 |
Interest Rate |  | 4.875% |  |  | 4.875% |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Line of credit facility outstanding |  | $ 250 | [4],[5] |  |  |  | 70 |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility |  | 250 | [4],[5] |  |  |  | 70 |
Total capacity, short-term debt, line of credit facility |  | 1,400 | [4],[5] |  |  | $ 1,400 |  | $ 1,050
Line of Credit Facility, Remaining Borrowing Capacity |  | $ 1,150 |  |  |  |  |  |
Line of Credit | Less than or equal to 3.50 to 1.00 but greater than or equal to 2.50 to 1.00 | Revolving Credit Facility | LIBOR |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.25% |  |  |  |  |  |
Line of Credit | Less than or equal to 3.50 to 1.00 but greater than or equal to 2.50 to 1.00 | Revolving Credit Facility | ABR |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.25% |  |  |  |  |  |
Securitization obligations |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Securitization obligations outstanding |  | $ 264 |  |  |  |  | 194 |
Net Amount |  |  |  |  |  |  |  |
Securitization obligations outstanding |  | 264 |  |  |  |  | 194 |
Securitization obligations | Apple Ridge Funding LLC |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Securitization obligations outstanding |  | 250 | [6],[7] |  |  |  | 181 |
Net Amount |  |  |  |  |  |  |  |
Securitization obligations outstanding |  | 250 | [6],[7] |  |  |  | 181 |
Total capacity, securitization obligations | [3],[7] | 250 |  |  |  |  |  |
Securitization obligations | Cartus Financing Limited |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Securitization obligations outstanding |  | 14 | [7],[8] |  |  |  | 13 |
Net Amount |  |  |  |  |  |  |  |
Securitization obligations outstanding |  | 14 | [7],[8] |  |  |  | $ 13 |
Total capacity, securitization obligations | [3],[7] | 20 |  |  |  |  |  |
Debt Instrument, Unused Borrowing Capacity, Amount |  | $ 6 |  |  |  |  |  |
Securitization obligations | Revolving Credit Facility | Cartus Financing Limited |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Total capacity, securitization obligations | £ |  |  |  |  | £ 10 |  |  |
Securitization obligations | Working Capital Facility | Cartus Financing Limited |  |  |  |  |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Total capacity, securitization obligations | £ |  |  |  |  | £ 5 |  |  |
Subsequent Event | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  |  |
Line of credit facility outstanding | [4],[5] |  |  | $ 253 |  |  |  |
Net Amount |  |  |  |  |  |  |  |
Outstanding borrowings, short-term debt, line of credit facility | [4],[5] |  |  | 253 |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  | $ 1,147 |  |  |  |
[1] | Not included in this table is the Company's Unsecured Letter of Credit Facility which had a capacity of $66 million with $64 million utilized at a weighted average rate of 3.33% at September 30, 2018.
[2] | The Term Loan B 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 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%).
[3] | The Term Loan A provides for quarterly amortization payments, which commenced on June 30, 2018, totaling per annum 2.5%, 2.5%, 5.0%, 7.5% and 10.0% of the original principal amount of the Term Loan A, with the balance of the Term Loan A due at maturity on February 8, 2023. The interest rates with respect to the Term Loan A 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 senior secured leverage ratio, the LIBOR margin was 2.25% and the ABR margin was 1.25% for the three months ended September 30, 2018.
[4] | As of September 30, 2018, the Company had $1,400 million of borrowing capacity under its Revolving Credit Facility, with $1,150 million of available capacity. The Revolving Credit Facility expires in February 2023 but is classified on the balance sheet as current due to the revolving nature of the facility. On October 31, 2018, the Company had $253 million in outstanding borrowings under the Revolving Credit Facility, leaving $1,147 million of available capacity.
[5] | Interest rates with respect to revolving loans under the Senior Secured Credit Facility at September 30, 2018 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 senior secured leverage ratio, the LIBOR margin was 2.25% and the ABR margin was 1.25% for the three months ended September 30, 2018.
[6] | As of September 30, 2018, the Company utilized the full borrowing capacity of $250 million under the Apple Ridge Funding LLC securitization program.
[7] | Available capacity is subject to maintaining sufficient relocation related assets to collateralize these securitization obligations.
[8] | Consists of a £10 million revolving loan facility and a £5 million working capital facility. As of September 30, 2018, the Company had $20 million of borrowing capacity under the Cartus Financing Limited securitization program leaving $6 million of available capacity.

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