Long-Term Debt (Debt Issuance Costs) - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
Debt Disclosure [Abstract] | ||
Debt issuance costs | $ 37.6 | $ 20.9 |
Accumulated amortization | 12.6 | 9.5 |
Amortization expenses reported as interest expense | 7.1 | $ 3.2 |
Estimated amortization of debt issuance costs year one | 6.5 | |
Estimated amortization of debt issuance costs year two | 6.6 | |
Estimated amortization of debt issuance costs year three | 6.7 | |
Estimated amortization of debt issuance costs year four | 5.1 | |
Estimated amortization of debt issuance costs year five | $ 5.2 |