Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ (36.9)	$ (376.4)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	170.7	87.1
Stock-based compensation expense	125.0	84.9
(Gain) loss from derivatives, sale of investments and other assets and foreign currency, net	(4.9)	2.5
(Accretion) amortization on marketable debt securities, net		(2.2)
Noncash lease expense	12.9	11.8
Noncash interest expense	40.2	18.8
Change in deferred income taxes and other	(43.0)	(11.1)
Impairment related to real estate assets	66.8
Changes in operating assets and liabilities:
Accounts receivable, net	24.3	(28.5)
Prepaid expenses and other assets	(21.9)	6.5
Accounts payable	(7.4)	(4.7)
Deferred revenue	(4.2)	210.2
Income tax payable	25.1	19.3
Operating lease and other liabilities	(250.8)	205.1
Net cash provided by (used in) operating activities	95.9	223.3
Cash flows from investing activities:
Purchases of investments	(612.7)	(560.0)
Maturities of investments	568.8	1,024.6
Sales of investments		549.9
Acquisition of property and equipment	(6.8)	(16.1)
Business combinations, net of cash acquired and restricted cash held in escrow	(222.2)	(791.1)
Release of restricted cash escrow from business combinations		(30.0)
Asset acquisitions of intangible assets	(4.3)
Other investing activities, net	(5.9)	(1.4)
Net cash provided by (used in) investing activities	(283.1)	175.9
Cash flows from financing activities:
Debt issuance costs paid	(1.2)
Taxes paid related to net share settlement of stockholders' equity awards	(15.2)	(42.9)
Proceeds from issuance of common stock	15.1	16.1
Acquisition-related contingent consideration payments	(56.1)	(63.6)
Net cash provided by (used in) financing activities	(57.4)	(90.4)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(7.4)	11.4
Net change in cash, cash equivalents and restricted cash	(252.0)	320.2
Cash, cash equivalents and restricted cash, beginning of period	1,500.4	453.3
Cash, cash equivalents and restricted cash, end of period	1,248.4	773.5
Noncash investing activities:
Acquisition-related deferred purchase consideration	2.3	23.8
Acquisition-related stock option issuance	$ 2.2
Acquisition-related common stock issuance		$ 1,137.7