Basis of Presentation and Significant Accounting Policies - Summary of Accrued Expenses (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Accrued salaries and wages	$ 558.6	$ 50.1
Accrued value-added tax and other taxes	153.3	1.3
Accrued transportation and facility charges	156.1	4.9
Accrued insurance claims	95.3	5.8
Accrued estimated litigation liabilities	66.1	11.5
Accrued purchased services	61.7	18.9
Accrued interest	56.8	15.1
Accrued restricted stock cash settlements	19.3	0.0
Other accrued expenses	124.6	12.3
Total Accrued Expenses	$ 1,291.8	$ 119.9