Debt - Summary of Debt - Master Trust Notes (Details) - USD ($)
$ in Thousands |
3 Months Ended |
|
Mar. 31, 2015 |
Dec. 31, 2014 |
| Debt Instrument [Line Items] |
|
|
| Long-term debt, gross |
$ 4,422,309
|
$ 4,421,220
|
| Debt discount, net |
(54,574)
|
(51,586)
|
| Deferred financing costs, net |
(48,499)
|
(46,332)
|
| Total debt, net |
4,319,236
|
4,323,302
|
| Master Trust Notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Long-term debt, gross |
1,705,910
|
1,710,380
|
| Debt discount, net |
(25,916)
|
(26,903)
|
| Deferred financing costs, net |
(21,808)
|
(22,113)
|
| Total debt, net |
$ 1,658,186
|
1,661,364
|
| Master Trust Notes | Series 2014-1 Class A1 |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
6.00%
|
|
| Stated interest rates |
5.10%
|
|
| Remaining Term |
5 years 2 months 12 days
|
|
| Long-term debt, gross |
$ 72,933
|
75,489
|
| Master Trust Notes | Series 2014-1 Class A2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
6.00%
|
|
| Stated interest rates |
5.40%
|
|
| Remaining Term |
5 years 3 months 18 days
|
|
| Long-term debt, gross |
$ 253,300
|
253,300
|
| Master Trust Notes | Series 2014-2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
6.10%
|
|
| Stated interest rates |
5.80%
|
|
| Remaining Term |
6 years
|
|
| Long-term debt, gross |
$ 232,086
|
232,867
|
| Master Trust Notes | Series 2014-3 |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
6.00%
|
|
| Stated interest rates |
5.70%
|
|
| Remaining Term |
7 years
|
|
| Long-term debt, gross |
$ 312,600
|
312,705
|
| Master Trust Notes | Series 2014-4 Class A1 |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
3.90%
|
|
| Stated interest rates |
3.50%
|
|
| Remaining Term |
4 years 9 months 18 days
|
|
| Long-term debt, gross |
$ 150,000
|
150,000
|
| Master Trust Notes | Series 2014-4 Class A2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
4.80%
|
|
| Stated interest rates |
4.60%
|
|
| Remaining Term |
14 years 9 months 18 days
|
|
| Long-term debt, gross |
$ 360,000
|
360,000
|
| Master Trust Notes | Total Master Trust 2014 notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
5.50%
|
|
| Stated interest rates |
5.10%
|
|
| Remaining Term |
8 years 2 months 12 days
|
|
| Long-term debt, gross |
$ 1,380,919
|
1,384,361
|
| Master Trust Notes | Series 2013-1 Class A |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
4.60%
|
|
| Stated interest rates |
3.90%
|
|
| Remaining Term |
3 years 8 months 12 days
|
|
| Long-term debt, gross |
$ 125,000
|
125,000
|
| Master Trust Notes | Series 2013-2 Class A |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
5.60%
|
|
| Stated interest rates |
5.30%
|
|
| Remaining Term |
8 years 8 months 12 days
|
|
| Long-term debt, gross |
$ 199,991
|
201,019
|
| Master Trust Notes | Total Master Trust 2013 notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Effective Interest Rates |
5.20%
|
|
| Stated interest rates |
4.70%
|
|
| Remaining Term |
6 years 9 months 18 days
|
|
| Long-term debt, gross |
$ 324,991
|
$ 326,019
|