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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash Flows from Operating Activities:      
Net income $ 491,983 $ 451,959 $ 406,815
Adjustments to reconcile net income to net cash provided by operating activities —      
Depreciation 255,529 225,256 218,107
Amortization of intangible assets 165,366 76,704 62,091
Asset impairment charges 5,743 8,282 13,892
Impairment of cost method investment 0 9,311 0
Change in fair value of contingent consideration liabilities 6,734 719 13,404
Equity in earnings of unconsolidated affiliates, net of distributions (28,682) (1,309) (76,801)
Amortization of deferred financing costs 8,405 5,126 1,870
Gain on sale of property and equipment (9,116) (3,056) (5,797)
Provision for credit losses 34,890 3,656 11,249
Deferred income tax expense (benefit) 26,071 (60,016) (7,919)
Non-cash stock-based compensation 88,259 91,641 52,013
Foreign currency and other (5,110) (5,159) (5,568)
Payments for contingent consideration liabilities 0 (14,506) 0
Changes in operating assets and liabilities, net of non-cash transactions (457,682) 327,369 (156,805)
Net cash provided by operating activities 582,390 1,115,977 526,551
Cash Flows from Investing Activities:      
Capital expenditures (385,852) (260,052) (261,762)
Proceeds from sale of property and equipment 49,186 35,390 31,142
Proceeds from insurance settlements related to property and equipment 535 542 1,964
Cash paid for acquisitions, net of cash, cash equivalents and restricted cash acquired (2,451,703) (292,573) (387,966)
Proceeds from disposition of businesses 0 18,785 0
Investments in unconsolidated affiliates and other (139,021) (14,856) (47,056)
Cash received from investments 29,109 13,963 46,590
Cash paid for intangible assets (867) (522) (508)
Net cash used in investing activities (2,898,613) (499,323) (617,596)
Cash Flows from Financing Activities:      
Borrowings under credit facility 5,316,002 2,983,529 6,175,558
Payments under credit facility (4,265,478) (4,187,645) (5,903,069)
Proceeds from notes offerings 1,487,450 990,130 0
Payments on other long-term debt (3,635) (2,970) (2,203)
Net borrowings (repayments) of short-term debt 11,391 (4,846) (28,292)
Deferred financing costs (12,568) (11,089) (2,309)
Payments for contingent consideration liabilities (263) (61,483) 0
Distributions to non-controlling interests, net of contributions received (6,357) (5,404) (2,526)
Payments related to tax withholding for share-based compensation (64,956) (25,447) (16,144)
Payments of dividends (34,022) (28,891) (23,236)
Repurchase of common stock (66,687) (247,249) (20,092)
Net cash provided by (used in) financing activities 2,360,877 (601,365) 177,687
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash 425 1,774 (153)
Net increase in cash, cash equivalents and restricted cash 45,079 17,063 86,489
Cash, cash equivalents and restricted cash, beginning of year 186,808 169,745 83,256
Cash, cash equivalents and restricted cash, end of year $ 231,887 $ 186,808 $ 169,745