Financial Statements for Guarantors of the Senior Notes (Details 2) - USD ($) $ in Millions	Jun. 30, 2017		Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Assets:
Cash and cash equivalents	$ 808.7	[1]	$ 563.4	$ 614.0	$ 786.0
Short-term marketable securities	179.6	[1]	234.7
Receivables, net of allowance	351.4	[1]	378.7
Income tax receivable	182.7	[1]	102.1
Inventory	627.3	[1]	665.8
Property, plant, and equipment, net	6,073.2	[1]	5,966.8
Investments in and advances to subsidiaries	0.0		0.0
Restricted cash	194.8	[1]	178.2
Goodwill and other assets	1,034.4		1,035.6
Total assets	9,452.1	[1]	9,125.3
Liabilities:
Accounts payable	167.1	[1]	156.1
Accrued liabilities	412.4	[1]	426.1
Debt	3,270.0	[1]	3,056.6
Deferred income	22.0	[1]	23.5
Deferred income taxes	1,210.7	[1]	1,072.9
Advances from subsidiaries	0.0		0.0
Other liabilities	54.4	[1]	79.0
Total stockholders' equity	4,315.5	[1]	4,311.1
Total liabilities and stockholders' equity	9,452.1	[1]	9,125.3
Reportable legal entities | Parent
Assets:
Cash and cash equivalents	784.0		537.9	592.6	768.3
Short-term marketable securities	179.6		234.7
Receivables, net of allowance	0.4		1.1
Income tax receivable	180.5		99.9
Inventory	0.0		0.0
Property, plant, and equipment, net	49.4		48.8
Investments in and advances to subsidiaries	5,032.6		4,862.4
Restricted cash	0.0		0.0
Goodwill and other assets	145.6		150.8
Total assets	6,372.1		5,935.6
Liabilities:
Accounts payable	7.4		5.7
Accrued liabilities	219.7		200.0
Debt	828.2		818.7
Deferred income	0.0		0.0
Deferred income taxes	117.0		78.6
Advances from subsidiaries	833.9		458.2
Other liabilities	50.4		63.3
Total stockholders' equity	4,315.5		4,311.1
Total liabilities and stockholders' equity	6,372.1		5,935.6
Reportable legal entities | Combined Guarantor Subsidiaries
Assets:
Cash and cash equivalents	6.1		5.2	1.3	1.7
Short-term marketable securities	0.0		0.0
Receivables, net of allowance	176.3		219.2
Income tax receivable	0.0		0.0
Inventory	405.1		444.2
Property, plant, and equipment, net	2,212.5		2,347.4
Investments in and advances to subsidiaries	2,963.7		2,565.0
Restricted cash	0.5		0.0
Goodwill and other assets	587.1		585.1
Total assets	6,351.3		6,166.1
Liabilities:
Accounts payable	57.2		54.8
Accrued liabilities	61.9		87.7
Debt	30.2		32.0
Deferred income	20.5		21.9
Deferred income taxes	1,078.6		984.7
Advances from subsidiaries	0.0		0.0
Other liabilities	1.9		13.5
Total stockholders' equity	5,101.0		4,971.5
Total liabilities and stockholders' equity	6,351.3		6,166.1
Reportable legal entities | Combined Non-Guarantor Subsidiaries
Assets:
Cash and cash equivalents	47.3		51.3	46.0	51.1
Short-term marketable securities	0.0		0.0
Receivables, net of allowance	174.7		158.4
Income tax receivable	2.2		2.2
Inventory	232.8		231.5
Property, plant, and equipment, net	4,333.3		4,029.8
Investments in and advances to subsidiaries	363.2		334.6
Restricted cash	165.6		147.1
Goodwill and other assets	307.4		301.0
Total assets	5,626.5		5,255.9
Liabilities:
Accounts payable	102.9		96.1
Accrued liabilities	136.5		139.7
Debt	2,411.6		2,205.9
Deferred income	1.5		1.6
Deferred income taxes	14.8		9.3
Advances from subsidiaries	0.0		0.0
Other liabilities	2.1		2.2
Total stockholders' equity	2,957.1		2,801.1
Total liabilities and stockholders' equity	5,626.5		5,255.9
Eliminations
Assets:
Cash and cash equivalents	(28.7)		(31.0)	$ (25.9)	$ (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	(10.6)		(9.9)
Property, plant, and equipment, net	(522.0)		(459.2)
Investments in and advances to subsidiaries	(8,359.5)		(7,762.0)
Restricted cash	28.7		31.1
Goodwill and other assets	(5.7)		(1.3)
Total assets	(8,897.8)		(8,232.3)
Liabilities:
Accounts payable	(0.4)		(0.5)
Accrued liabilities	(5.7)		(1.3)
Debt	0.0		0.0
Deferred income	0.0		0.0
Deferred income taxes	0.3		0.3
Advances from subsidiaries	(833.9)		(458.2)
Other liabilities	0.0		0.0
Total stockholders' equity	(8,058.1)		(7,772.6)
Total liabilities and stockholders' equity	$ (8,897.8)		$ (8,232.3)

[1] (unaudited)