Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 42.3	$ 55.5	$ 46.3
Charged to Expense or Sales	127.9	87.7	90.1
Deductions	122.5	100.9	80.9
Balance at End of Year	47.7	42.3	55.5
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	20.6	27.9	21.8
Charged to Expense or Sales	(0.1)	(2.7)	6.2
Deductions	2.4	4.6	0.1
Balance at End of Year	18.1	20.6	27.9
Allowance for customer discounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	11.5	12.1	11.2
Charged to Expense or Sales	111.7	87.9	74.3
Deductions	111.0	88.5	73.4
Balance at End of Year	12.2	11.5	12.1
Subtotal
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	32.1	40.0	33.0
Charged to Expense or Sales	111.6	85.2	80.5
Deductions	113.4	93.1	73.5
Balance at End of Year	30.3	32.1	40.0
Allowance for sales returns
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	10.2	15.5	13.3
Charged to Expense or Sales	16.3	2.5	9.6
Deductions	9.1	7.8	7.4
Balance at End of Year	$ 17.4	$ 10.2	$ 15.5