Debt - Summary of Debt - Master Trust Notes (Details) - USD ($)
$ in Thousands |
9 Months Ended |
|
Sep. 30, 2016 |
Dec. 31, 2015 |
| Debt Instrument [Line Items] |
|
|
| Total debt, gross |
$ 3,803,650
|
$ 4,186,567
|
| Debt discount, net |
(54,975)
|
(52,203)
|
| Deferred financing costs, net |
(38,812)
|
(41,577)
|
| Total debt, net |
3,709,863
|
4,092,787
|
| Master Trust Notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Total debt, gross |
1,677,660
|
1,692,094
|
| Debt discount, net |
(19,829)
|
(22,909)
|
| Deferred financing costs, net |
(17,138)
|
(19,345)
|
| Total debt, net |
$ 1,640,693
|
1,649,840
|
| Master Trust Notes | Series 2014-1 Class A1 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
5.10%
|
|
| Maturity |
3 years 8 months 23 days
|
|
| Total debt, gross |
$ 56,759
|
65,027
|
| Master Trust Notes | Series 2014-1 Class A2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
5.40%
|
|
| Maturity |
3 years 9 months 18 days
|
|
| Total debt, gross |
$ 253,300
|
253,300
|
| Master Trust Notes | Series 2014-2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
5.80%
|
|
| Maturity |
4 years 5 months 19 days
|
|
| Total debt, gross |
$ 227,150
|
229,674
|
| Master Trust Notes | Series 2014-3 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
5.70%
|
|
| Maturity |
5 years 5 months 19 days
|
|
| Total debt, gross |
$ 311,936
|
312,276
|
| Master Trust Notes | Series 2014-4 Class A1 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
3.50%
|
|
| Maturity |
3 years 3 months 18 days
|
|
| Total debt, gross |
$ 150,000
|
150,000
|
| Master Trust Notes | Series 2014-4 Class A2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
4.60%
|
|
| Maturity |
13 years 3 months 21 days
|
|
| Total debt, gross |
$ 360,000
|
360,000
|
| Master Trust Notes | Total Master Trust 2014 notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
5.10%
|
|
| Maturity |
6 years 9 months 3 days
|
|
| Total debt, gross |
$ 1,359,145
|
1,370,277
|
| Master Trust Notes | Series 2013-1 Class A |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
3.90%
|
|
| Maturity |
2 years 2 months 19 days
|
|
| Total debt, gross |
$ 125,000
|
125,000
|
| Master Trust Notes | Series 2013-2 Class A |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
5.30%
|
|
| Maturity |
7 years 2 months 19 days
|
|
| Total debt, gross |
$ 193,515
|
196,817
|
| Master Trust Notes | Total Master Trust 2013 notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rates |
4.70%
|
|
| Maturity |
5 years 3 months 3 days
|
|
| Total debt, gross |
$ 318,515
|
$ 321,817
|