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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Cash Flows [Abstract]
Net income	$ 958.2	$ 386.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and loss on disposal of property, plant, and equipment	132.8	102.5
Amortization of intangible assets	14.5	24.7
Loss (gain) on investments, accretion, and amortization, net	(4.3)	(2.4)
Deferred income taxes	(24.0)	52.5
Share-based compensation expense	211.3	186.5
Amortization of contract acquisition assets	10.0	8.2
Changes in operating assets and liabilities, net of effects of acquisition:
Accounts receivable	(59.6)	136.9
Inventory	(92.4)	(120.1)
Prepaids and other assets	(177.0)	(95.5)
Accounts payable	38.2	(3.6)
Accrued compensation and employee benefits	19.0	(83.0)
Deferred revenue	10.6	4.1
Other liabilities	(17.0)	(14.5)
Net cash provided by operating activities	1,020.3	582.7
Investing activities:
Purchase of investments	(3,507.7)	(1,426.8)
Proceeds from Sale of Investments	72.1	800.7
Proceeds from maturities of investments	2,596.9	1,298.6
Purchase of property, plant, and equipment and intellectual property	(134.3)	(215.2)
Acquisition of businesses, net of cash	(8.7)	(37.7)
Net cash provided by (used in) investing activities	(981.7)	419.6
Financing activities:
Proceeds from issuance of common stock relating to employee stock plans	153.7	154.0
Taxes paid related to net share settlement of equity awards	(187.9)	(155.1)
Repurchase of common stock	0.0	(100.0)
Payment of deferred purchase consideration	(9.7)	(30.0)
Net cash provided by (used in) financing activities	(43.9)	(131.1)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(2.6)	(1.6)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(7.9)	869.6
Cash, cash equivalents, and restricted cash, beginning of period	1,638.5	1,182.6
Cash, cash equivalents, and restricted cash, end of period	$ 1,630.6	$ 2,052.2

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