| As at December 31, | 2017 | 2016 | ||||||
| Senior Secured Credit Facilities (a) | ||||||||
| Revolving Credit Facility | $ | — | $ | — | ||||
| Term Loan B – U.S. Facility (December 31, 2017 – USD$2,399,686, December 31, 2016 – USD$2,423,925) | 3,016,645 | 3,257,998 | ||||||
| 8.875% Senior Notes (USD$500,000) (c) | 628,550 | 672,050 | ||||||
| 3,645,195 | 3,930,048 | |||||||
| Less: deferred financing costs, interest rate floors and prepayment options (d) | (101,818 | ) | (78,410 | ) | ||||
| 3,543,377 | 3,851,638 | |||||||
| Less: current indebtedness | (14,486 | ) | (21,931 | ) | ||||
| Long-term indebtedness | $ | 3,528,891 | $ | 3,829,707 | ||||