CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 4,214.1	$ 1,521.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	138.5	114.9
Non-cash compensation expense	276.4	209.3
Gains on marketable and other securities, net	(553.9)	(199.6)
Other non-cash items, net	192.6	23.8
Deferred taxes	51.8	118.0
Changes in assets and liabilities:
Increase in accounts receivable	(2,883.9)	(47.1)
Increase in inventories	(221.5)	(233.4)
(Increase) decrease in prepaid expenses and other assets	(277.8)	33.8
(Decrease) increase in deferred revenue	(64.8)	78.9
Increase in accounts payable, accrued expenses, and other liabilities	423.7	20.9
Total adjustments	(2,918.9)	119.5
Net cash provided by operating activities	1,295.2	1,641.4
Cash flows from investing activities:
Purchases of marketable and other securities	(1,886.5)	(1,533.5)
Sales or maturities of marketable and other securities	1,217.1	2,843.7
Capital expenditures	(263.8)	(300.0)
Net cash (used in) provided by investing activities	(933.2)	1,010.2
Cash flows from financing activities:
Proceeds from bridge loan facility	0.0	1,500.0
Proceeds from issuance of Common Stock	308.2	2,168.0
Payments in connection with Common Stock tendered for employee tax obligations	(180.7)	(571.6)
Repurchases of Common Stock	(612.1)	(5,373.6)
Net cash used in financing activities	(484.6)	(2,277.2)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(122.6)	374.4
Cash, cash equivalents, and restricted cash at beginning of period	2,207.3	1,630.3
Cash, cash equivalents, and restricted cash at end of period	$ 2,084.7	$ 2,004.7