Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Cash flows from operating activities:
Net income		$ 310.2		$ 471.0		$ 252.7
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation expense		279.4		209.3		222.6
Depreciation, amortization, and accretion		194.7		217.7		237.4
Deferred income taxes		(262.1)		(222.5)		71.7
Provision for inventory excess and obsolescence		109.8		36.9		4.9
Operating lease assets expense		40.7		40.3		44.9
Gain on divestiture		0.0		(45.8)		0.0
Loss (gain) on privately-held investments, net	[1]	97.3	[2]	(20.4)	[3]	(12.7)	[2]
Loss from equity method investment		9.6		4.8		0.0
Loss on extinguishment of debt		0.0		0.0		60.6
Impairment of assets	[3]	28.0		5.1		16.3
Loss (gain) on non-qualified deferred compensation plan and other	[3]	(4.8)		12.7		(4.7)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable, net		183.4		(232.0)		(31.8)
Inventory	[3]	(484.4)		(394.2)		(60.4)
Prepaid expenses and other assets	[3]	182.2		(299.0)		(249.9)
Accounts payable		(51.9)		67.4		0.2
Accrued compensation		(13.2)		(23.1)		70.3
Income taxes payable		(99.6)		21.1		24.3
Other accrued liabilities		(7.5)		(3.3)		(85.4)
Deferred revenue		361.0		251.6		128.7
Net cash provided by operating activities		872.8		97.6		689.7
Cash flows from investing activities:
Purchases of property and equipment		(159.4)		(105.1)		(100.0)
Proceeds from divestiture, net		0.0		89.1		0.0
Purchases of available-for-sale debt securities		(155.0)		(104.1)		(649.8)
Proceeds from sales of available-for-sale debt securities		31.9		118.2		546.1
Proceeds from maturities and redemptions of available-for-sale debt securities		217.3		390.3		394.0
Purchases of equity securities		(11.6)		(16.5)		(10.1)
Proceeds from sales of equity securities		15.7		47.7		25.6
Payments for business acquisitions, net of cash and cash equivalents acquired		0.0		0.0		(182.6)
Subsequent payments related to acquisitions in prior years		(0.7)		(14.6)		(10.1)
Funding of loan receivable and other		(5.8)		2.5		0.7
Net cash provided by (used in) investing activities		(67.6)		407.5		13.8
Cash flows from financing activities:
Repurchase and retirement of common stock		(397.6)		(315.2)		(443.5)
Proceeds from issuance of common stock		61.9		57.2		56.4
Payment of dividends		(280.8)		(270.4)		(259.1)
Payment of debt		0.0		0.0		(423.8)
Payment of debt extinguishment costs		0.0		0.0		(58.3)
Payment of debt issuance costs and other		(2.3)		0.0		(3.4)
Net cash used in financing activities		(618.8)		(528.4)		(1,131.7)
Effect of foreign currency exchange rates on cash, cash equivalents, and restricted cash		0.2		(21.7)		(12.1)
Net increase (decrease) in cash, cash equivalents, and restricted cash		186.6		(45.0)		(440.3)
Cash, cash equivalents, and restricted cash at beginning of period		897.7		942.7		1,383.0
Cash, cash equivalents, and restricted cash at end of period		1,084.3		897.7		942.7
Supplemental disclosures of cash flow information:
Cash paid for interest, net of amounts capitalized		81.5		67.3		62.6
Cash paid for income taxes, net		400.9		253.2		113.2
Non-cash investing activity:
Equity method investment		$ 0.0		$ 40.3		$ 0.0

[1] Privately-held investments represent investments in privately-held debt, redeemable preferred stock securities, and equity investments without readily determinable fair value. Refer to Note 2, Cash Equivalents and Investments.

[2] The prior period amounts have been reclassified to conform to the current period presentation.

[3] The prior period amounts have been reclassified to conform to the current period presentation.