CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 973.5	$ 1,115.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	74.3	67.4
Stock-based compensation expense	166.9	130.9
Losses (gains) on marketable and other securities, net	204.5	(144.4)
Other non-cash items, net	84.3	28.7
Deferred taxes	(225.0)	10.1
Changes in assets and liabilities:
Decrease (increase) in accounts receivable	1,197.5	(58.3)
Increase in inventories	(88.6)	(252.8)
Increase in prepaid expenses and other assets	(44.8)	(50.0)
Increase (decrease) in deferred revenue	9.5	(143.6)
Decrease in accounts payable, accrued expenses, and other liabilities	(250.4)	(34.7)
Total adjustments	1,128.2	(446.7)
Net cash provided by operating activities	2,101.7	668.5
Cash flows from investing activities:
Purchases of marketable and other securities	(2,309.8)	(1,360.0)
Sales or maturities of marketable and other securities	746.3	416.3
Capital expenditures	(141.8)	(115.3)
Net cash used in investing activities	(1,705.3)	(1,059.0)
Cash flows from financing activities:
Proceeds from issuance of Common Stock	521.6	95.0
Payments in connection with Common Stock tendered for employee tax obligations	(98.8)	(154.5)
Repurchases of Common Stock	(358.1)	(306.9)
Net cash provided by (used in) financing activities	64.7	(366.4)
Net increase (decrease) in cash, cash equivalents, and restricted cash	461.1	(756.9)
Cash, cash equivalents, and restricted cash at beginning of period	2,898.1	2,207.3
Cash, cash equivalents, and restricted cash at end of period	$ 3,359.2	$ 1,450.4