Leases and Contingencies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Rent expense, including contingent rents	$ 400.3	$ 330.8	$ 326.8
Contingent rent expense	186.2	139.7	$ 133.9
Future sublease income under non-cancellable operating leases	29.8
Recent guidance on business combinations
Business combinations
Contingent payment obligations accrued	$ 0.1	$ 0.3