Revenue Recognition - Schedule of ASC 606 Impact on Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Inventories	$ 878.0	$ 806.9
Prepaid expenses and other current assets	400.0	203.2
Total current assets	2,902.2	2,819.6
Total assets	10,983.4	11,628.8	$ 13,870.1
Liabilities and Shareholders’ Equity
Other non-current liabilities	443.4	429.5
Total non-current liabilities	3,777.9	4,022.2
Total liabilities	5,315.3	5,458.2
Accumulated deficit
Accumulated deficit	(1,838.3)	(1,975.5)
Total controlling interests	5,668.0	6,170.5	$ 5,958.1	$ 10,107.4
Total shareholders’ equity	5,668.1	6,170.6
Total liabilities and shareholders' equity	10,983.4	$ 11,628.8
Adjustments | ASU 2014-09
Assets
Inventories	17.2
Prepaid expenses and other current assets	(25.5)
Total current assets	(8.3)
Total assets	(8.3)
Liabilities and Shareholders’ Equity
Other non-current liabilities	(0.1)
Total non-current liabilities	(0.1)
Total liabilities	(0.1)
Accumulated deficit
Accumulated deficit	(8.2)
Total controlling interests	(8.2)
Total shareholders’ equity	(8.2)
Total liabilities and shareholders' equity	(8.3)
Balances without adoption of ASC 606
Assets
Inventories	895.2
Prepaid expenses and other current assets	374.5
Total current assets	2,893.9
Total assets	10,975.1
Liabilities and Shareholders’ Equity
Other non-current liabilities	443.3
Total non-current liabilities	3,777.8
Total liabilities	5,315.2
Accumulated deficit
Accumulated deficit	(1,846.5)
Total controlling interests	5,659.8
Total shareholders’ equity	5,659.9
Total liabilities and shareholders' equity	$ 10,975.1