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Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Short-term Marketable Securities

Short-term marketable securities, consisting of debt securities, were as follows as of the dates indicated:

			September 30, 2021
(In millions)			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Estimated Market Value
Debt securities, available for sale:
U.S. government agencies			$	898.9					$	—					$	(0.1)					$	898.8
Commercial paper			254.8						—						—						254.8
Corporate debt			100.1						—						(0.1)						100.0
Total debt securities, available for sale			$	1,253.8					$	—					$	(0.2)					$	1,253.6

			December 31, 2020
(In millions)			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Estimated Market Value
Debt securities, available for sale:
U.S. government agencies			$	1,570.4					$	0.1					$	(0.1)					$	1,570.4
Commercial paper			258.7						0.1						—						258.8
Corporate debt			60.9						—						—						60.9
Total debt securities, available for sale			$	1,890.0					$	0.2					$	(0.1)					$	1,890.1

Schedule of Inventory

(In millions)			September 30, 2021						December 31, 2020
Raw materials			$	129.1					$	69.9
Work-in-process			18.4						14.2
Finished goods			203.8						150.6
Total inventory			$	351.3					$	234.7

Schedule of Property and Equipment

(In millions)			September 30, 2021						December 31, 2020
Land (1)			$	15.6					$	15.6
Building (1)			49.1						49.2
Furniture and fixtures			27.7						15.3
Computer software and hardware			45.5						35.7
Machinery and equipment			241.5						198.9
Leasehold improvements			242.4						135.8
Construction in progress			323.4						219.0
Total cost			945.2						669.5
Less accumulated depreciation and amortization			(203.0)						(154.2)
Total property and equipment, net			$	742.2					$	515.3

(1) Represents finance lease right-of-use assets.

Schedule of Accounts Payable and Accrued Liabilities

(In millions)			September 30, 2021						December 31, 2020
Accounts payable trade			$	210.0					$	163.3
Accrued tax, audit, and legal fees			34.0						15.3
Accrued rebates			293.4						247.0
Accrued warranty			12.5						11.7
Other accrued liabilities			48.1						43.8
Total accounts payable and accrued liabilities			$	598.0					$	481.1

Schedule of Accrued Payroll and Related Expenses

(In millions)			September 30, 2021						December 31, 2020
Accrued wages, bonus and taxes			$	88.4					$	87.7
Other accrued employee benefits			26.9						26.6
Total accrued payroll and related expenses			$	115.3					$	114.3

Schedule of Other Long-Term Liabilities

(In millions)			September 30, 2021						December 31, 2020
Finance lease obligations			$	57.8					$	54.0
Contractual obligations			12.6						12.6
Other liabilities			28.1						14.3
Total other long-term liabilities			$	98.5					$	80.9

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Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

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