Other Current Liabilities - Summary of Other Current and Long-Term Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Other current liabilities:
Salaries, wages and benefits	$ 356.3	$ 167.7
License and service agreements	212.9	100.2
Forward starting interest rate swaps		59.3
Litigation settlement accrual (Note 16)	90.3	70.0
Accrued liabilities	801.4	401.3
Total other current liabilities	$ 1,460.9	$ 798.5