XML 87 R74.htm IDEA: XBRL DOCUMENT v3.3.1.900
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