Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net income	$ 94.4	$ 240.8
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	277.3	258.0
Impairment of long-lived assets	0.0	23.9
Deferred income taxes	(31.8)	38.0
Stock-based compensation	11.2	13.7
Pensions and other postretirement benefits, net of contributions	(9.5)	(0.6)
Gain on sale of business	0.0	(15.5)
Loss (Gain) on disposal of property, plant and equipment, net	1.1	(4.9)
Debt refinancing and redemption costs and (gain) on settlement of capital lease	2.4	(0.8)
Changes in operating assets and liabilities
Accounts receivable	(170.5)	(225.7)
Inventories	0.0	(47.4)
Accounts payable and accrued expenses	24.5	83.7
Deferred revenue	0.1	8.1
Other assets and liabilities	(62.3)	(81.9)
Net cash provided by operating activities	136.9	289.4
Investing activities
Purchases of property, plant and equipment	(237.5)	(273.0)
Proceeds from sale of property, plant and equipment	1.7	0.9
Investment in joint venture	(2.2)	0.0
Purchase buyouts of leased equipment	0.0	(0.5)
Proceeds from sale of business, net	0.0	47.1
Acquisition of business	0.0	(1.3)
Net cash used in investing activities	(238.0)	(226.8)
Financing activities
Payments of long-term debt and finance lease obligations	(128.2)	(528.7)
Proceeds from issuance of long-term debt	8.0	461.9
Debt issuance costs	0.0	(6.8)
Purchase of noncontrolling interest	0.0	(2.2)
Purchase of treasury stock	(7.5)	(3.6)
Net cash used in financing activities	(127.7)	(79.4)
Effect of exchange rate changes on cash	1.2	(4.3)
Net decrease in cash, cash equivalents and restricted cash	(227.6)	(21.1)
Cash, cash equivalents and restricted cash at beginning of period	478.9	376.8
Cash, cash equivalents and restricted cash at end of period	251.3	355.7
Supplemental cash flow information
Interest paid	102.1	104.4
Income taxes paid, net of refunds	$ 34.6	$ 19.6