CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (242.3)	$ (353.7)	$ (1,394.3)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation, amortization and impairments	682.8	738.7	903.2
Goodwill impairments	0.0	69.0	1,002.6
Change in deferred income taxes	(5.7)	(164.6)	(330.6)
Stock-based compensation	27.2	35.3	25.4
Non-cash interest expense	21.2	40.4	40.2
Earnings from equity investments, net	(26.7)	(13.0)	(16.9)
Distributed earnings from equity investments	33.2	26.4	24.9
Loss (gain) on debt financing transactions	38.1	(25.2)	0.0
Changes in current assets and liabilities, net of effects of acquisitions:
Accounts and notes receivable, net	(48.0)	30.0	26.4
Inventories	(2.2)	2.5	29.3
Other current assets and liabilities	(35.9)	21.3	101.5
Accounts payable and accrued liabilities	64.5	14.7	4.6
Other, net	0.9	(2.8)	(2.1)
Net cash provided by operating activities	507.1	419.0	414.2
Cash flows from investing activities:
Capital expenditures	(293.7)	(272.9)	(323.6)
Acquisitions of businesses, net of cash acquired	(57.7)	0.0	0.0
Proceeds from asset sales	7.5	16.7	6.7
Acquisitions and additions to equity method investments	(107.3)	(1.2)	(2.7)
Distributions of capital from equity investments	34.1	25.3	38.7
Changes in other assets and liabilities and other	2.5	4.1	11.2
Net cash used in investing activities	(414.6)	(228.0)	(269.7)
Cash flows from financing activities:
Borrowings under revolving credit facility	475.0	360.0	170.0
Repayments under revolving credit facility	(170.0)	(410.0)	(260.0)
Proceeds from issuance of long-term debt	2,112.4	0.0	0.0
Payments on long-term debt	(23.0)	(49.8)	(51.3)
Repayments of senior notes and term loans	(1,693.4)	(39.9)	0.0
Payments of debt issuance and deferred financing costs	(58.7)	0.0	0.0
Payments on license obligations	(52.6)	(50.2)	(40.5)
Net redemptions of common stock under stock-based compensation plans and other	(9.5)	(6.1)	(1.4)
Net cash provided by (used in) financing activities	580.2	(196.0)	(183.2)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	4.5	(4.9)	(10.3)
Increase (decrease) in cash, cash equivalents and restricted cash	677.2	(9.9)	(49.0)
Cash, cash equivalents and restricted cash, beginning of period	156.9	166.8	215.8
Cash, cash equivalents and restricted cash, end of period	834.1	156.9	166.8
Supplemental cash flow information:
Cash paid for interest	575.0	621.5	596.3
Income taxes paid	37.8	21.9	34.1
Non-cash investing and financing transactions:
Non-cash rollover and refinancing of Term loans (see Note 16)	6,030.4	0.0	0.0
Non-cash additions to intangible assets related to license agreements	$ 26.0	$ 78.3	$ 15.4