CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 8,075.3	$ 3,513.2	$ 2,115.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	286.2	235.9	210.3
Non-cash compensation expense	601.7	432.0	464.3
Gains on marketable and other securities, net	(387.0)	(221.8)	(131.5)
Other non-cash items, net	568.7	86.8	102.2
Deferred taxes	(147.1)	75.6	(130.6)
Changes in assets and liabilities:
Increase in accounts receivable	(1,927.4)	(1,356.1)	(523.7)
Increase in inventories	(494.3)	(529.4)	(335.5)
(Increase) decrease in prepaid expenses and other assets	(240.7)	114.9	(79.8)
(Decrease) increase in deferred revenue	(120.2)	148.1	139.5
Increase in accounts payable, accrued expenses, and other liabilities	866.1	118.9	599.0
Total adjustments	(994.0)	(895.1)	314.2
Net cash provided by operating activities	7,081.3	2,618.1	2,430.0
Cash flows from investing activities:
Purchases of marketable and other securities	(7,048.1)	(3,241.0)	(3,202.4)
Sales or maturities of marketable and other securities	2,215.3	3,785.0	1,604.2
Capital expenditures	(551.9)	(614.6)	(429.6)
Net cash used in investing activities	(5,384.7)	(70.6)	(2,027.8)
Cash flows from financing activities:
Proceeds from issuance of Common Stock	1,672.3	2,575.2	211.8
Payments in connection with Common Stock tendered for employee tax obligations	(1,032.7)	(680.8)	(188.0)
Repurchases of Common Stock	(1,645.4)	(5,846.8)	(275.9)
Proceeds from issuance of long-term debt	0.0	1,981.9	0.0
Proceeds from bridge loan facility	0.0	1,500.0	0.0
Repayment of bridge loan facility	0.0	(1,500.0)	0.0
Net cash used in financing activities	(1,005.8)	(1,970.5)	(252.1)
Net increase in cash, cash equivalents, and restricted cash	690.8	577.0	150.1
Cash, cash equivalents, and restricted cash at beginning of period	2,207.3	1,630.3	1,480.2
Cash, cash equivalents, and restricted cash at end of period	2,898.1	2,207.3	1,630.3
Supplemental disclosure of cash flow information
Cash paid for interest (net of amounts capitalized)	55.8	23.2	25.0
Cash paid for income taxes	$ 1,218.4	$ 188.1	$ 342.3