Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Components of Debt

Our total debt as of September 30, 2017 and December 31, 2016 was as follows:

	September 30, 2017						December 31, 2016
(in millions of U.S. dollars)	Principal		Unamortized Debt Issuance Costs		Net		Principal		Unamortized Debt Issuance Costs		Net
10.000% senior notes due in 2021 1		271.1		—		271.1		384.2		—		384.2
5.500% senior notes due in 2024		531.1		9.8		521.3		474.1		9.8		464.3
5.500% senior notes due in 2025		750.0		11.2		738.8		—		—		—
Capital leases		5.4		—		5.4		5.8		—		5.8
Total debt		1,557.6		21.0		1,536.6		864.1		9.8		854.3
Capital leases - current maturities		2.6		—		2.6		2.9		—		2.9
Total current debt		2.6		—		2.6		2.9		—		2.9
Total long-term debt	$	1,555.0	$	21.0	$	1,534.0	$	861.2	$	9.8	$	851.4

^1. Includes unamortized premium of $21.1 million and $34.2 million at September 30, 2017 and December 31, 2016, respectively. The effective interest rate is 7.515%.