Financial Statements for Guarantors of the Senior Notes (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets:
Cash and cash equivalents at beginning of period	$ 887.9	$ 428.5	$ 573.0	$ 351.1
Short-term marketable securities	75.0	149.7
Receivables, net of allowance	405.3	365.0
Income tax receivable	58.6	7.7
Inventory	1,068.4	814.7
Property, plant, and equipment, net	4,902.9	4,770.6
Investments in and advances to subsidiaries	0	0
Restricted cash	234.7	260.7
Goodwill and other assets	1,101.0	516.5
Assets	8,733.8	7,313.4
Liabilities:
Accounts payable	295.4	216.3
Accrued liabilities	709.6	567.4
Debt	3,553.0	2,989.8
Deferred income	36.4	40.8
Deferred income taxes	632.6	650.7
Advances from subsidiaries	0	0
Other liabilities	109.4	99.3
Total stockholders' equity	3,397.4	2,749.1	2,137.6	1,948.3
Total liabilities and stockholders' equity	8,733.8	7,313.4
Parent
Assets:
Cash and cash equivalents at beginning of period	827.7	409.8	506.2	336.4
Short-term marketable securities	75.0	149.7
Receivables, net of allowance	0	0
Income tax receivable	58.6	7.7
Inventory	0	0
Property, plant, and equipment, net	29.3	44.5
Investments in and advances to subsidiaries	4,426.6	3,431.7
Restricted cash	0	0
Goodwill and other assets	180.6	133.1
Assets	5,597.8	4,176.5
Liabilities:
Accounts payable	15.0	11.6
Accrued liabilities	235.8	213.0
Debt	789.5	375.9
Deferred income	0	0
Deferred income taxes	0	0
Advances from subsidiaries	1,067.5	744.5
Other liabilities	92.6	82.4
Total stockholders' equity	3,397.4	2,749.1
Total liabilities and stockholders' equity	5,597.8	4,176.5
Combined Guarantor Subsidiaries
Assets:
Cash and cash equivalents at beginning of period	11.1	2.1	4.5	1.5
Short-term marketable securities	0	0
Receivables, net of allowance	190.0	223.4
Income tax receivable	0	0
Inventory	836.6	642.1
Property, plant, and equipment, net	774.8	947.2
Investments in and advances to subsidiaries	4,028.0	2,806.5
Restricted cash	0	25.0
Goodwill and other assets	131.6	144.3
Assets	5,972.1	4,790.6
Liabilities:
Accounts payable	154.8	115.6
Accrued liabilities	286.9	202.7
Debt	39.1	42.2
Deferred income	34.5	38.7
Deferred income taxes	637.5	655.9
Advances from subsidiaries	0	0
Other liabilities	13.7	13.9
Total stockholders' equity	4,805.6	3,721.6
Total liabilities and stockholders' equity	5,972.1	4,790.6
Combined Non-Guarantor Subsidiaries
Assets:
Cash and cash equivalents at beginning of period	89.4	44.0	74.7	48.7
Short-term marketable securities	0	0
Receivables, net of allowance	215.7	142.2
Income tax receivable	0	0
Inventory	249.8	180.7
Property, plant, and equipment, net	4,663.1	4,264.7
Investments in and advances to subsidiaries	3.4	79.8
Restricted cash	194.4	208.3
Goodwill and other assets	819.0	247.8
Assets	6,234.8	5,167.5
Liabilities:
Accounts payable	126.2	89.7
Accrued liabilities	186.9	151.7
Debt	2,724.4	2,571.7
Deferred income	1.9	2.1
Deferred income taxes	8.7	3.5
Advances from subsidiaries	597.7	19.2
Other liabilities	3.1	3.0
Total stockholders' equity	2,585.9	2,326.6
Total liabilities and stockholders' equity	6,234.8	5,167.5
Eliminations
Assets:
Cash and cash equivalents at beginning of period	(40.3)	(27.4)	(12.4)	(35.5)
Short-term marketable securities	0	0
Receivables, net of allowance	(0.4)	(0.6)
Income tax receivable	0	0
Inventory	(18.0)	(8.1)
Property, plant, and equipment, net	(564.3)	(485.8)
Investments in and advances to subsidiaries	(8,458.0)	(6,318.0)
Restricted cash	40.3	27.4
Goodwill and other assets	(30.2)	(8.7)
Assets	(9,070.9)	(6,821.2)
Liabilities:
Accounts payable	(0.6)	(0.6)
Accrued liabilities	0	0
Debt	0	0
Deferred income	0	0
Deferred income taxes	(13.6)	(8.7)
Advances from subsidiaries	(1,665.2)	(763.7)
Other liabilities	0	0
Total stockholders' equity	(7,391.5)	(6,048.2)
Total liabilities and stockholders' equity	$ (9,070.9)	$ (6,821.2)