Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income (loss)	$ 3,789	$ (17,047)
Adjustments to reconcile net income (loss) to operating activities:
Amortization, depreciation and write-offs	195,973	83,704
Amortization of debt issuance costs and discount	6,380	3,414
Stock-based compensation	57,103	8,494
Change in operating right-of-use asset	12,267	3,578
Lease modification and abandonment of leasehold improvements	0	7,851
Loss on settlement of debt	16,852	0
Net unrealized gains on fair value remeasurement of financial instruments	(9,855)	(2,940)
Net gain on foreign currency remeasurement	952	203
Changes in operating assets and liabilities:
Accounts receivable	(69,881)	7,708
Prepaid expenses and other current assets	(92,851)	(16,840)
Other assets	5,269	2,598
Accounts payable	33,936	(5,713)
Operating lease liabilities	(12,083)	(2,828)
Accrued and other liabilities	6,752	(2,839)
Deferred revenue	(2,327)	15,915
Net cash provided by operating activities	152,276	85,258
Investing Activities
Purchase of property and equipment	(653)	(1,183)
Acquisitions, net of cash acquired	(1,017,012)	(523,202)
Purchase of non-marketable investments and other	(14,000)	0
Proceeds from other investing activities	10,000	0
Capitalized software development costs	(1,517)	0
Net cash used in investing activities	(1,023,182)	(524,385)
Financing Activities
Proceeds from issuance of common stock in initial public offering, net of issuance costs as adjusted for cost reimbursement	1,744,240	0
Proceeds from debt issuance, net of issuance costs	844,729	331,346
Payments of debt principal	(706,905)	(56,690)
Payments of finance leases	(4,621)	(4,356)
Proceeds from exercise of stock options	17,888	262
Payments of deferred acquisition costs	(157,565)	(11,020)
Repurchases of common stock	0	(1,766)
Net cash provided by financing activities	1,737,766	257,776
Effect of foreign exchange rate on cash and cash equivalents	(352)	9
Net increase (decrease) in cash and cash equivalents	866,508	(181,342)
Cash and cash equivalents at beginning of the period	317,235	396,247
Cash and cash equivalents at end of the period	1,183,743	214,905
Supplemental non-cash investing and financing activities disclosures:
Issuance of convertible security related to acquisitions	342,170	0
Acquisitions of business through issuance of common stock and common stock warrants	0	38,167
Acquisitions not yet paid	119,256	9,169
Deferred IPO costs not yet paid	986	0
Assets acquired under finance leases	2,658	2,780
Right of use assets acquired under operating leases	0	6,937
Supplemental disclosure of cash flow information:
Cash paid for interest on debt	31,767	30,236
Cash paid for income taxes	$ 32,737	$ 1,866