Financial Statements for Guarantors of the Senior Notes - Balance Sheet - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 778.6	$ 563.4	$ 786.0	$ 887.9
Short-term marketable securities	319.5	234.7
Receivables, net of allowance	369.7	378.7
Income tax receivable	29.0	102.1
Inventory	640.6	665.8
Property, plant, and equipment, net	6,134.7	5,966.8
Investments in and advances to subsidiaries	0.0	0.0
Restricted cash	195.2	178.2
Goodwill and other assets	1,075.9	1,035.6
Total assets	9,543.2	9,125.3	8,885.9
Liabilities:
Accounts payable	175.4	156.1
Accrued liabilities	440.0	426.1
Total debt	3,242.4	3,056.6
Deferred income	20.5	23.5
Deferred income taxes	743.2	1,072.9
Advances from subsidiaries	0.0	0.0
Other liabilities	63.7	79.0
Total stockholders' equity	4,858.0	4,311.1	4,048.7	3,397.4
Total liabilities and stockholders' equity	9,543.2	9,125.3
Reportable legal entities | Parent
Assets:
Cash and cash equivalents	763.9	537.9	768.3	827.7
Short-term marketable securities	319.5	234.7
Receivables, net of allowance	1.1	1.1
Income tax receivable	24.0	99.9
Inventory	0.0	0.0
Property, plant, and equipment, net	47.6	48.8
Investments in and advances to subsidiaries	5,515.2	4,862.4
Restricted cash	0.0	0.0
Goodwill and other assets	159.2	150.8
Total assets	6,830.5	5,935.6
Liabilities:
Accounts payable	7.5	5.7
Accrued liabilities	236.5	200.0
Total debt	838.1	818.7
Deferred income	0.0	0.0
Deferred income taxes	53.8	78.6
Advances from subsidiaries	775.2	458.2
Other liabilities	61.4	63.3
Total stockholders' equity	4,858.0	4,311.1
Total liabilities and stockholders' equity	6,830.5	5,935.6
Reportable legal entities | Combined Guarantor Subsidiaries
Assets:
Cash and cash equivalents	1.6	5.2	1.7	11.1
Short-term marketable securities	0.0	0.0
Receivables, net of allowance	204.2	219.2
Income tax receivable	0.0	0.0
Inventory	413.6	444.2
Property, plant, and equipment, net	2,310.7	2,347.4
Investments in and advances to subsidiaries	3,049.7	2,565.0
Restricted cash	0.0	0.0
Goodwill and other assets	590.9	585.1
Total assets	6,570.7	6,166.1
Liabilities:
Accounts payable	65.9	54.8
Accrued liabilities	59.1	87.7
Total debt	28.3	32.0
Deferred income	19.1	21.9
Deferred income taxes	683.2	984.7
Advances from subsidiaries	0.0	0.0
Other liabilities	0.7	13.5
Total stockholders' equity	5,714.4	4,971.5
Total liabilities and stockholders' equity	6,570.7	6,166.1
Reportable legal entities | Combined Non-Guarantor Subsidiaries
Assets:
Cash and cash equivalents	65.3	51.3	51.1	89.4
Short-term marketable securities	0.0	0.0
Receivables, net of allowance	164.4	158.4
Income tax receivable	5.0	2.2
Inventory	236.8	231.5
Property, plant, and equipment, net	4,293.0	4,029.8
Investments in and advances to subsidiaries	255.5	334.6
Restricted cash	143.0	147.1
Goodwill and other assets	326.3	301.0
Total assets	5,489.3	5,255.9
Liabilities:
Accounts payable	102.2	96.1
Accrued liabilities	144.9	139.7
Total debt	2,376.0	2,205.9
Deferred income	1.4	1.6
Deferred income taxes	5.9	9.3
Advances from subsidiaries	0.0	0.0
Other liabilities	1.6	2.2
Total stockholders' equity	2,857.3	2,801.1
Total liabilities and stockholders' equity	5,489.3	5,255.9
Eliminations
Assets:
Cash and cash equivalents	(52.2)	(31.0)	$ (35.1)	$ (40.3)
Short-term marketable securities	0.0	0.0
Receivables, net of allowance	0.0	0.0
Income tax receivable	0.0	0.0
Inventory	(9.8)	(9.9)
Property, plant, and equipment, net	(516.6)	(459.2)
Investments in and advances to subsidiaries	(8,820.4)	(7,762.0)
Restricted cash	52.2	31.1
Goodwill and other assets	(0.5)	(1.3)
Total assets	(9,347.3)	(8,232.3)
Liabilities:
Accounts payable	(0.2)	(0.5)
Accrued liabilities	(0.5)	(1.3)
Total debt	0.0	0.0
Deferred income	0.0	0.0
Deferred income taxes	0.3	0.3
Advances from subsidiaries	(775.2)	(458.2)
Other liabilities	0.0	0.0
Total stockholders' equity	(8,571.7)	(7,772.6)
Total liabilities and stockholders' equity	$ (9,347.3)	$ (8,232.3)