CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS (FOR) FROM OPERATING ACTIVITIES
Net (loss) income	$ (590,243)	$ 172,365	$ 126,653
Adjustments to reconcile net (loss) income to net cash (for) from operating activities:
Depreciation and amortization	157,549	170,456	155,529
Loss on early debt extinguishment	2,262	0	1,073
Loss on impairment of goodwill and other intangibles	103,999	0	0
Non-cash foreign currency (gain) loss on debt	(9,344)	(22,307)	37,724
Non-cash equity-based compensation expense	(209)	11,910	11,243
Non-cash deferred income tax (benefit) expense	(41,933)	(4,106)	11,259
Other non-cash expenses	30,396	24,460	16,146
Change in operating assets and liabilities:
(Increase) decrease in receivables	28,729	(8,166)	(13,975)
(Increase) decrease in inventories	(14,499)	(211)	(1,203)
(Increase) decrease in tax receivable	(97,488)	8,547	(13,842)
(Increase) decrease in other assets	(12,180)	(5,221)	148
Increase (decrease) in accounts payable	(9,917)	(1,107)	549
Increase (decrease) in deferred revenue	31,160	36,920	21,564
Increase (decrease) in accrued interest	12,235	13,414	(25)
Increase (decrease) in accrued salaries, wages and benefits	(4,609)	10,674	149
Increase (decrease) in other liabilities	(2,445)	(4,587)	(2,252)
Net cash (for) from operating activities	(416,537)	403,041	350,740
CASH FLOWS FOR INVESTING ACTIVITIES
Capital expenditures	(129,087)	(330,662)	(189,816)
Acquisitions, net of cash acquired	0	(270,171)	0
Proceeds from sale of other assets	8,266	617	112
Net cash for investing activities	(120,821)	(600,216)	(189,704)
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Note borrowings	1,300,000	500,000	0
Term debt payments	(465,125)	(5,625)	0
Distributions paid to partners	(53,020)	(210,011)	(203,199)
Payment of debt issuance costs and original issue discount	(46,849)	(8,262)	(2,543)
Payments related to tax withholding for equity compensation	(4,624)	(4,250)	(8,428)
Other	468	(1,383)	(2,405)
Net cash from (for) financing activities	730,850	270,469	(216,575)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	992	3,609	(5,357)
Net increase (decrease) for the year	194,484	76,903	(60,896)
Balance, beginning of year	182,252	105,349	166,245
Balance, end of year	376,736	182,252	105,349
SUPPLEMENTAL INFORMATION
Cash payments for interest	130,444	85,596	84,947
Interest capitalized	2,653	3,001	2,864
Cash payments for income taxes, net of refunds	1,792	40,793	42,159
Capital expenditures in accounts payable	$ 3,286	$ 9,073	$ 5,083