Business Acquisitions - Summary of Esso Portfolio Acquisition (Details) - USD ($) $ in Thousands |
3 Months Ended | 5 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 01, 2014 |
Sep. 30, 2014 |
Dec. 01, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Dec. 31, 2014 |
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| Business Acquisition [Line Items] | |||||||||||
| Consideration paid (net of cash acquired) | $ 0 | $ 591,791 | |||||||||
| Less: | |||||||||||
| Goodwill | $ 1,068,455 | $ 1,116,902 | |||||||||
| ESSO Portfolio [Member] | |||||||||||
| Business Acquisition [Line Items] | |||||||||||
| Consideration paid (net of cash acquired) | $ 80,000 | $ 379,458 | |||||||||
| Less: | |||||||||||
| Accounts receivable | $ 303,376 | 303,376 | |||||||||
| Other tangible assets and liabilities, net | (8,497) | (8,497) | |||||||||
| Goodwill | 40,628 | 40,628 | |||||||||
| ESSO Portfolio [Member] | Licensing agreements [Member] | |||||||||||
| Less: | |||||||||||
| Finite-lived intangible assets | [1] | $ 36,605 | 36,605 | ||||||||
| Weighted average life | 4 years 7 months 6 days | ||||||||||
| ESSO Portfolio [Member] | Customer Relationships [Member] | |||||||||||
| Less: | |||||||||||
| Finite-lived intangible assets | [2] | $ 7,346 | $ 7,346 | ||||||||
| Weighted average life | 7 years 2 months 12 days | ||||||||||
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