Financial Statements for Guarantors of the Senior Notes (Details 2) - USD ($) $ in Millions	Mar. 31, 2017		Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Assets:
Cash and cash equivalents	$ 586.7	[1]	$ 563.4	$ 635.7	$ 786.0
Short-term marketable securities	192.1	[1]	234.7
Receivables, net of allowance	323.7	[1]	378.7
Income tax receivable	133.0	[1]	102.1
Inventory	632.1	[1]	665.8
Property, plant, and equipment, net	6,080.1	[1]	5,966.8
Investments in and advances to subsidiaries	0.0		0.0
Restricted cash	183.8	[1]	178.2
Goodwill and other assets	1,011.9		1,035.6
Total assets	9,143.4	[1]	9,125.3
Liabilities:
Accounts payable	156.4	[1]	156.1
Accrued liabilities	398.6	[1]	426.1
Debt	3,036.0	[1]	3,056.6
Deferred income	22.7	[1]	23.5
Deferred income taxes	1,128.5	[1]	1,072.9
Advances from subsidiaries	0.0		0.0
Other liabilities	52.3	[1]	79.0
Total stockholders' equity	4,348.9	[1]	4,311.1
Total liabilities and stockholders' equity	9,143.4	[1]	9,125.3
Reportable legal entities | Parent
Assets:
Cash and cash equivalents	562.9		537.9	611.4	768.3
Short-term marketable securities	192.1		234.7
Receivables, net of allowance	0.8		1.1
Income tax receivable	130.8		99.9
Inventory	0.0		0.0
Property, plant, and equipment, net	48.3		48.8
Investments in and advances to subsidiaries	4,923.1		4,862.4
Restricted cash	0.0		0.0
Goodwill and other assets	125.1		150.8
Total assets	5,983.1		5,935.6
Liabilities:
Accounts payable	6.1		5.7
Accrued liabilities	203.0		200.0
Debt	823.3		818.7
Deferred income	0.0		0.0
Deferred income taxes	90.3		78.6
Advances from subsidiaries	463.3		458.2
Other liabilities	48.2		63.3
Total stockholders' equity	4,348.9		4,311.1
Total liabilities and stockholders' equity	5,983.1		5,935.6
Reportable legal entities | Combined Guarantor Subsidiaries
Assets:
Cash and cash equivalents	5.2		5.2	4.8	1.7
Short-term marketable securities	0.0		0.0
Receivables, net of allowance	139.8		219.2
Income tax receivable	0.0		0.0
Inventory	411.0		444.2
Property, plant, and equipment, net	2,498.9		2,347.4
Investments in and advances to subsidiaries	2,593.4		2,565.0
Restricted cash	0.0		0.0
Goodwill and other assets	587.5		585.1
Total assets	6,235.8		6,166.1
Liabilities:
Accounts payable	49.3		54.8
Accrued liabilities	64.5		87.7
Debt	31.1		32.0
Deferred income	21.2		21.9
Deferred income taxes	1,025.7		984.7
Advances from subsidiaries	0.0		0.0
Other liabilities	1.9		13.5
Total stockholders' equity	5,042.1		4,971.5
Total liabilities and stockholders' equity	6,235.8		6,166.1
Reportable legal entities | Combined Non-Guarantor Subsidiaries
Assets:
Cash and cash equivalents	53.6		51.3	48.4	51.1
Short-term marketable securities	0.0		0.0
Receivables, net of allowance	183.1		158.4
Income tax receivable	2.2		2.2
Inventory	232.6		231.5
Property, plant, and equipment, net	3,987.9		4,029.8
Investments in and advances to subsidiaries	334.0		334.6
Restricted cash	148.8		147.1
Goodwill and other assets	302.3		301.0
Total assets	5,244.5		5,255.9
Liabilities:
Accounts payable	101.5		96.1
Accrued liabilities	134.1		139.7
Debt	2,181.6		2,205.9
Deferred income	1.5		1.6
Deferred income taxes	12.2		9.3
Advances from subsidiaries	0.0		0.0
Other liabilities	2.2		2.2
Total stockholders' equity	2,811.4		2,801.1
Total liabilities and stockholders' equity	5,244.5		5,255.9
Eliminations
Assets:
Cash and cash equivalents	(35.0)		(31.0)	$ (28.9)	$ (35.1)
Short-term marketable securities	0.0		0.0
Receivables, net of allowance	0.0		0.0
Income tax receivable	0.0		0.0
Inventory	(11.5)		(9.9)
Property, plant, and equipment, net	(455.0)		(459.2)
Investments in and advances to subsidiaries	(7,850.5)		(7,762.0)
Restricted cash	35.0		31.1
Goodwill and other assets	(3.0)		(1.3)
Total assets	(8,320.0)		(8,232.3)
Liabilities:
Accounts payable	(0.5)		(0.5)
Accrued liabilities	(3.0)		(1.3)
Debt	0.0		0.0
Deferred income	0.0		0.0
Deferred income taxes	0.3		0.3
Advances from subsidiaries	(463.3)		(458.2)
Other liabilities	0.0		0.0
Total stockholders' equity	(7,853.5)		(7,772.6)
Total liabilities and stockholders' equity	$ (8,320.0)		$ (8,232.3)

[1] (unaudited)