Guarantor Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 466.2	$ 312.4	$ 199.7	$ 290.5
Accounts and notes receivable, net	296.6	260.0
Inventories	239.8	220.6
Other Assets, Current	29.2	34.1
Assets Held-for-sale, Current	0.9	2.2
Accounts and notes receivable affiliates	0.0	0.0
Total current assets	1,032.7	829.3
Investment in affiliates	0.0	0.0
Property, plant and equipment, net	252.2	226.6
Intangible assets, net	1,155.5	1,074.2
Due from Affiliate, Noncurrent	0.0	0.0
Other noncurrent assets	101.6	117.3
Total assets	2,542.0	2,247.4	2,263.0
Current liabilities:
Accounts payable and accruals	425.8	381.4
Short-term borrowings and current maturities of long-term debt	35.0	48.2
Accounts and note payable affiliates	0.0	0.0
Total current liabilities	460.8	429.6
Long-term debt	1,442.3	1,415.6
Note payable affiliate	0.0	0.0
Other noncurrent liabilities	233.4	285.8
Total liabilities	2,136.5	2,131.0
Equity:
Stockholders' Equity Attributable to Parent	401.6	113.3
Stockholders' Equity Attributable to Noncontrolling Interest	3.9	3.1
Total equity	405.5	116.4	29.7	18.5
Total liabilities and equity	2,542.0	2,247.4
Parent Company [Member]
Current assets:
Cash and cash equivalents	0.7	0.5	3.3	27.1
Accounts and notes receivable, net	0.0	0.0
Inventories	0.0	0.0
Other Assets, Current	0.3	0.4
Assets Held-for-sale, Current	0.0	0.0
Accounts and notes receivable affiliates	0.0	0.0
Total current assets	1.0	0.9
Investment in affiliates	1,079.6	1,229.4
Property, plant and equipment, net	0.0	0.0
Intangible assets, net	0.0	0.0
Due from Affiliate, Noncurrent	3.5	53.2
Other noncurrent assets	5.0	5.4
Total assets	1,089.1	1,288.9
Current liabilities:
Accounts payable and accruals	1.9	7.0
Short-term borrowings and current maturities of long-term debt	35.0	46.9
Accounts and note payable affiliates	0.2	0.4
Total current liabilities	37.1	54.3
Long-term debt	649.3	1,120.2
Note payable affiliate	0.0	0.0
Other noncurrent liabilities	1.1	1.1
Total liabilities	687.5	1,175.6
Equity:
Stockholders' Equity Attributable to Parent	401.6	113.3
Stockholders' Equity Attributable to Noncontrolling Interest	0.0	0.0
Total equity	401.6	113.3
Total liabilities and equity	1,089.1	1,288.9
Other Subsidiaries [Member]
Current assets:
Cash and cash equivalents	465.3	311.8	196.1	262.9
Accounts and notes receivable, net	296.6	260.0
Inventories	239.8	220.6
Other Assets, Current	16.7	17.6
Assets Held-for-sale, Current	0.9	2.2
Accounts and notes receivable affiliates	33.1	36.8
Total current assets	1,052.4	849.0
Investment in affiliates	0.0	0.0
Property, plant and equipment, net	252.2	226.6
Intangible assets, net	1,155.5	1,074.2
Due from Affiliate, Noncurrent	2,182.9	2,690.7
Other noncurrent assets	91.4	97.1
Total assets	4,734.4	4,937.6
Current liabilities:
Accounts payable and accruals	457.7	403.3
Short-term borrowings and current maturities of long-term debt	0.0	1.3
Accounts and note payable affiliates	396.8	331.6
Total current liabilities	854.5	736.2
Long-term debt	1.1	1.0
Note payable affiliate	1,168.6	1,203.0
Other noncurrent liabilities	230.2	284.7
Total liabilities	2,254.4	2,224.9
Equity:
Stockholders' Equity Attributable to Parent	2,476.1	2,709.6
Stockholders' Equity Attributable to Noncontrolling Interest	3.9	3.1
Total equity	2,480.0	2,712.7
Total liabilities and equity	4,734.4	4,937.6
Subsidiary Issuer [Member]
Current assets:
Cash and cash equivalents	0.2	0.1	0.3	0.5
Accounts and notes receivable, net	0.0	0.0
Inventories	0.0	0.0
Other Assets, Current	53.1	49.7
Assets Held-for-sale, Current	0.0	0.0
Accounts and notes receivable affiliates	396.8	331.6
Total current assets	450.1	381.4
Investment in affiliates	215.3	220.2
Property, plant and equipment, net	0.0	0.0
Intangible assets, net	0.0	0.0
Due from Affiliate, Noncurrent	1,165.1	1,149.8
Other noncurrent assets	5.2	14.8
Total assets	1,835.7	1,766.2
Current liabilities:
Accounts payable and accruals	7.1	4.7
Short-term borrowings and current maturities of long-term debt	0.0	0.0
Accounts and note payable affiliates	32.9	36.4
Total current liabilities	40.0	41.1
Long-term debt	791.9	294.4
Note payable affiliate	2,182.9	2,690.7
Other noncurrent liabilities	2.1	0.0
Total liabilities	3,016.9	3,026.2
Equity:
Stockholders' Equity Attributable to Parent	(1,181.2)	(1,260.0)
Stockholders' Equity Attributable to Noncontrolling Interest	0.0	0.0
Total equity	(1,181.2)	(1,260.0)
Total liabilities and equity	1,835.7	1,766.2
Consolidation, Eliminations [Member]
Current assets:
Cash and cash equivalents	0.0	0.0	$ 0.0	$ 0.0
Accounts and notes receivable, net	0.0	0.0
Inventories	0.0	0.0
Other Assets, Current	(40.9)	(33.6)
Assets Held-for-sale, Current	0.0	0.0
Accounts and notes receivable affiliates	(429.9)	(368.4)
Total current assets	(470.8)	(402.0)
Investment in affiliates	(1,294.9)	(1,449.6)
Property, plant and equipment, net	0.0	0.0
Intangible assets, net	0.0	0.0
Due from Affiliate, Noncurrent	(3,351.5)	(3,893.7)
Other noncurrent assets	0.0	0.0
Total assets	(5,117.2)	(5,745.3)
Current liabilities:
Accounts payable and accruals	(40.9)	(33.6)
Short-term borrowings and current maturities of long-term debt	0.0	0.0
Accounts and note payable affiliates	(429.9)	(368.4)
Total current liabilities	(470.8)	(402.0)
Long-term debt	0.0	0.0
Note payable affiliate	(3,351.5)	(3,893.7)
Other noncurrent liabilities	0.0	0.0
Total liabilities	(3,822.3)	(4,295.7)
Equity:
Stockholders' Equity Attributable to Parent	(1,294.9)	(1,449.6)
Stockholders' Equity Attributable to Noncontrolling Interest	0.0	0.0
Total equity	(1,294.9)	(1,449.6)
Total liabilities and equity	$ (5,117.2)	$ (5,745.3)