Commitments and Contingencies Future Commitments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Long-term Purchase Commitment [Line Items]
Guarantor Obligations, Current Carrying Value	$ 42.8	$ 36.1
Supply contracts [Abstract]
2018	486.6
2019	460.4
2020	382.0
2021	325.5
2022	287.1
Thereafter	220.1
Total	2,161.7
Unrecorded Unconditional Purchase Obligation, Purchases	1,200.0	910.7	$ 918.7
Advertising and Promotions Future Commitments Due [Abstract]
2018	289.6
2019	221.3
2020	98.9
2021	70.2
2022	54.5
Thereafter	171.8
Total	906.3
Advertising expense	1,300.0	644.1	401.6
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2018	54.2
2019	39.2
2020	38.0
2021	17.3
2022	8.7
Thereafter	19.1
Total future minimum lease payments	176.5
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2018	4.1
2019	4.2
2020	34.3
2021	4.0
2022	4.0
Thereafter	61.6
Total future minimum lease payments	112.2
Less: Interest on capital leases	(38.5)
Present value of future minimum capital lease payments(1)	73.7
Operating Leases, Rent Expense	64.1	36.6	$ 30.6
Prepaid Advertising	$ 41.1	$ 36.1