Other Current Liabilities - Summary of Other Current and Long-Term Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Other current liabilities:
Salaries, wages and benefits	$ 276.3	$ 167.7
License and service agreements	167.0	100.2
Accrued interest	113.8	4.0
Forward starting interest rate swaps		59.3
Litigation settlement accrual (Note 17)		70.0
Accrued liabilities	572.5	397.3
Total other current liabilities	$ 1,129.6	$ 798.5