Revenue Reserves (Details 1) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Total reserves	$ 662.7	$ 483.8	$ 426.2	$ 237.1
Reduction of accounts receivable
Total reserves	144.6	124.6
Component of accrued expenses and other
Total reserves	$ 518.1	$ 359.2