CONDENSED 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	$ 5,846.3	$ 2,364.0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	211.7	174.2
Non-cash compensation expense	413.3	310.5
Gains on marketable and other securities, net	(524.6)	(162.3)
Other non-cash items, net	264.4	51.0
Deferred taxes	58.8	117.9
Changes in assets and liabilities:
Increase in accounts receivable	(1,342.9)	(1,275.3)
Increase in inventories	(330.6)	(402.4)
(Increase) decrease in prepaid expenses and other assets	(316.8)	16.4
(Decrease) increase in deferred revenue	(71.2)	112.3
Increase in accounts payable, accrued expenses, and other liabilities	500.4	80.8
Total adjustments	(1,137.5)	(976.9)
Net cash provided by operating activities	4,708.8	1,387.1
Cash flows from investing activities:
Purchases of marketable and other securities	(4,872.3)	(2,642.7)
Sales or maturities of marketable and other securities	1,897.3	3,330.3
Capital expenditures	(397.0)	(453.2)
Net cash (used in) provided by investing activities	(3,372.0)	234.4
Cash flows from financing activities:
Proceeds from issuance of Common Stock	1,129.6	2,471.1
Payments in connection with Common Stock tendered for employee tax obligations	(450.3)	(652.5)
Repurchases of Common Stock	(778.5)	(5,465.7)
Proceeds from issuance of long-term debt	0.0	1,981.9
Proceeds from bridge loan facility	0.0	1,500.0
Repayment of bridge loan facility	0.0	(1,500.0)
Net cash used in financing activities	(99.2)	(1,665.2)
Net increase (decrease) in cash, cash equivalents, and restricted cash	1,237.6	(43.7)
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	$ 3,444.9	$ 1,586.6