Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income (loss)	$ 35,338	$ (125,934)	$ 119,040
Adjustments to reconcile net income (loss) to operating activities:
Amortization, depreciation and write-offs	431,063	254,951	92,806
Amortization of debt issuance costs and discount	12,825	8,152	4,979
Stock-based compensation	133,177	62,387	10,222
Change in operating right-of-use asset	26,313	9,333	2,602
Lease modification and abandonment of leasehold improvements	0	7,851	0
Loss on extinguishments of acquisition related contingent consideration	0	74,820	0
Change in fair value of contingent consideration	(230)	442	0
Loss on settlement of debt	18,236	0	0
Net unrealized gains on fair value remeasurement of financial instruments	(8,841)	(4,180)	0
Net loss (gain) on foreign currency remeasurement	(1,734)	2,097	14
Changes in operating assets and liabilities:
Accounts receivable	(201,948)	(113,234)	(33,524)
Prepaid expenses and other current assets	(97,324)	(13,289)	(19,867)
Other assets	(45,938)	(19,092)	(1,485)
Accounts payable	98,612	49,120	13,534
Operating lease liabilities	(26,854)	(8,812)	(2,242)
Accrued and other liabilities	3,063	2,783	5,661
Deferred revenue	(13,907)	35,488	6,722
Net cash provided by operating activities	361,851	222,883	198,462
Investing Activities
Purchase of property and equipment	(1,390)	(3,241)	(3,358)
Acquisitions, net of cash acquired	(1,206,482)	(674,650)	(404,196)
Purchase of non-marketable investments and other	(15,000)	(2,000)	(4,000)
Proceeds from other investing activities	12,009	0	0
Capitalized software development costs	(4,067)	0	0
Net cash used in investing activities	(1,214,930)	(679,891)	(411,554)
Financing Activities
Proceeds from issuance of common stock in initial public offering, net of issuance costs as adjusted for cost reimbursement	1,745,228	0	0
Proceeds from debt issuance, net of issuance costs	2,329,059	481,273	388,859
Payments of debt principal	(719,810)	(64,295)	(11,208)
Payments of finance leases	(15,271)	(9,708)	(5,663)
Proceeds from exercise of stock options	31,156	2,303	2,637
Proceeds from issuance of common stock	0	9,318	0
Proceeds from the issuance of common stock under the Employee Stock Purchase Plan	2,877	0	0
Payments of deferred acquisition costs	(234,068)	(17,586)	(41,454)
Payments of licensed asset obligation	(17,970)	(18,940)	0
Payments of related party notes	(11,655)	0	0
Repurchases of common stock	0	(1,766)	(11)
Payments of deferred IPO costs	0	(2,744)	0
Net cash provided by financing activities	3,109,546	377,855	333,160
Effect of foreign exchange rate on cash, cash equivalents and restricted cash equivalents	(3,198)	141	60
Net increase (decrease) in cash, cash equivalents and restricted cash equivalents	2,253,269	(79,012)	120,128
Cash, cash equivalents and restricted cash equivalents at beginning of the period	317,235	396,247	276,119
Cash, cash equivalents and restricted cash equivalents at end of the period	2,570,504	317,235	396,247
Supplemental non-cash investing and financing activities disclosures:
Conversion of convertible securities to Class A common stock	392,170	0	0
Issuance of convertible securities related to acquisitions	342,170	45,000	0
Acquisitions not yet paid	79,095	94,758	0
Assets acquired not yet paid	25,640	0	0
Assets acquired under finance leases	20,497	7,475	3,061
Settlement of bonus compensation through issuance of common stock	2,503	0	0
Acquisition of business through issuance of common stock and common stock warrants	0	38,167	192
Settlement of contingent consideration through issuance of common stock	0	31,422	0
Deferred IPO costs not yet paid	0	888	0
Accretion of interest on related party promissory notes	595	553	48
Common stock issued in exchange for redeemable noncontrolling interest	0	1,500	0
Repurchases of common stock from related parties financed by promissory notes	0	0	9,074
Interest expense offset by non-cash financing activities	0	0	3,549
Common stock warrant issued in connection with lease modification	0	433	0
Supplemental disclosure of cash flow information:
Cash paid for income taxes	90,616	12,666	30,474
Cash paid for interest on debt	$ 76,695	$ 59,360	$ 62,278