CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net income (loss)	$ 391,264	$ 96,341
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	347,269	334,780
Amortization (includes amortization of deferred financing costs and discounts of $12,470 and $13,150 for the nine months ended September 30, 2021 and 2020, respectively)	172,346	162,057
Intangible impairments	0	23,000
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	6,578	7,612
Stock-based compensation expense	46,852	35,618
Provision (benefit) for deferred income taxes	36,333	(3,074)
Loss on early extinguishment of debt	0	68,300
Gain on IPM Divestment (as defined in Note 4)	(180,569)	0
(Gain) loss on disposal/write-down of property, plant and equipment, net	(134,321)	(78,170)
Foreign currency transactions and other, net	(13,239)	4,043
(Increase) decrease in assets	(112,753)	(10,219)
(Decrease) increase in liabilities	(96,423)	(13,070)
Cash Flows from Operating Activities	463,337	627,218
Cash Flows from Investing Activities:
Capital expenditures	(418,976)	(309,162)
Cash paid for acquisitions, net of cash acquired	(203,752)	(118,581)
Acquisition of customer relationships	(4,800)	(3,529)
Customer inducements	(5,148)	(8,269)
Contract fulfillment costs and third-party commissions	(43,699)	(30,705)
Investments in joint ventures and other investments	(72,153)	(6,850)
Net proceeds from IPM Divestment	213,878	0
Proceeds from sales of property and equipment and other, net	214,865	116,965
Cash Flows from Investing Activities	(319,785)	(360,131)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(2,622,555)	(7,354,790)
Proceeds from revolving credit facility, term loan facilities and other debt	3,037,476	7,090,842
Early redemption of senior notes, including call premiums	0	(2,942,554)
Net proceeds from sales of senior notes	0	3,465,000
Debt repayment and equity distribution to noncontrolling interests	(1,882)	(2,197)
Repurchase of noncontrolling interest	(75,000)	0
Parent cash dividends	(538,902)	(537,853)
Net proceeds (payments) associated with employee stock-based awards	19,655	(979)
Other, net	3,621	(24,643)
Cash Flows from Financing Activities	(177,587)	(307,174)
Effect of Exchange Rates on Cash and Cash Equivalents	(9,589)	(1,496)
(Decrease) increase in Cash and Cash Equivalents	(43,624)	(41,583)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period	205,063	193,555
Cash and Cash Equivalents, including Restricted Cash, End of Period	161,439	151,972
Supplemental Information:
Cash Paid for Interest	395,355	357,897
Cash Paid for Income Taxes, Net	96,174	27,430
Non-Cash Investing and Financing Activities:
Financing Leases	40,590	34,889
Accrued Capital Expenditures	60,418	58,175
Fair Value of Investments Applied to Acquisitions	0	27,276
Dividends Payable	$ 189,010	$ 186,699