Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net loss	$ (172.9)	$ (245.6)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization	213.0	193.0
Unrealized foreign exchange loss (gain)	7.8	(12.2)
Stock-based compensation	49.7	37.4
Loss on debt extinguishment	50.4	0.0
Amortization of debt issuance costs	10.4	11.2
Change in deferred taxes	(62.2)	(139.6)
Bad debt expense	12.4	6.0
Other non-cash operating activities	(3.5)	4.0
Changes in assets and liabilities:
Trade and other receivables	(3.3)	(162.4)
Income taxes payable	(24.2)	8.7
Prepaid expenses and other current assets	(69.5)	(23.8)
Other non-current assets	68.8	26.9
Accounts payable and accrued expenses	(10.6)	67.7
Accrued compensation	(67.1)	(47.7)
Other current and non-current liabilities	(39.3)	33.9
Net cash used in operating activities	(40.1)	(242.5)
Cash flows from investing activities
Payment for property and equipment	(61.5)	(95.4)
Proceeds from sale of property, plant and equipment	0.5	0.3
Acquisitions of businesses, net of cash acquired	(22.2)	(82.7)
Investments in equity securities	(7.2)	0.0
Return of beneficial interest in a securitization	(85.0)	0.0
Collection on beneficial interest in a securitization	0.0	84.8
Other investing activities, net	0.1	0.0
Net cash used in investing activities	(175.3)	(93.0)
Cash flows from financing activities
Net proceeds from issuance of shares	9.0	10.5
Shares repurchased for payment of employee taxes on stock awards	(6.7)	(3.9)
Payment of contingent consideration	(22.3)	(7.1)
Proceeds from long-term borrowings	2,936.5	310.7
Repayment of borrowings	(3,126.1)	(132.6)
Debt issuance costs	(24.4)	(4.4)
Proceeds from initial public offering, net of underwriting	831.4	0.0
Proceeds from private placement	179.5	0.0
Payments of initial offering and private placement costs	(17.0)	0.0
Payment of finance lease liabilities	(8.8)	(5.2)
Other financing activities, net	(6.9)	0.0
Net cash provided by financing activities	744.2	168.0
Change in cash, cash equivalents and restricted cash	528.8	(167.5)
Cash, cash equivalents and restricted cash, beginning of the period	467.9	424.8
Effects of exchange rate fluctuations on cash, cash equivalents and restricted cash	0.5	14.5
Cash, cash equivalents and restricted cash, end of the period	$ 997.2	$ 271.8