Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Schedule of Long-Term Debt (Detail)

v3.4.0.3
Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Debt Disclosure [Abstract]    
Senior secured credit facility, carrying value $ 410.0 $ 639.5
Convertible senior notes, carrying value of liability component 992.8 982.5
Total 1,402.8 1,622.0
Less: current portion 410.0 229.5
Long-term portion $ 992.8 $ 1,392.5