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Balance Sheet Details (Tables)

6 Months Ended

Jun. 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:

			June 30, 2021
(In millions)			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Estimated Market Value
Debt securities, available for sale:
U.S. government agencies			$	1,057.3					$	0.1					$	(0.1)					$	1,057.3
Commercial paper			261.8						—						—						261.8
Corporate debt			107.1						—						(0.1)						107.0
Total debt securities, available for sale			$	1,426.2					$	0.1					$	(0.2)					$	1,426.1

			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)			June 30, 2021						December 31, 2020
Raw materials			$	104.6					$	69.9
Work-in-process			13.6						14.2
Finished goods			201.1						150.6
Total inventory			$	319.3					$	234.7

Schedule of Property and Equipment

(In millions)			June 30, 2021						December 31, 2020
Land (1)			$	15.6					$	15.6
Building (1)			49.1						49.2
Furniture and fixtures			21.9						15.3
Computer software and hardware			39.3						35.7
Machinery and equipment			236.4						198.9
Leasehold improvements			225.0						135.8
Construction in progress			275.5						219.0
Total cost			862.8						669.5
Less accumulated depreciation and amortization			(186.8)						(154.2)
Total property and equipment, net			$	676.0					$	515.3

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

Schedule of Accounts Payable and Accrued Liabilities

(In millions)			June 30, 2021						December 31, 2020
Accounts payable trade			$	165.9					$	163.3
Accrued tax, audit, and legal fees			17.9						15.3
Accrued rebates			237.4						247.0
Accrued warranty			11.2						11.7
Other accrued liabilities			49.6						43.8
Total accounts payable and accrued liabilities			$	482.0					$	481.1

Schedule of Accrued Payroll and Related Expenses

(In millions)			June 30, 2021						December 31, 2020
Accrued wages, bonus and taxes			$	64.6					$	87.7
Other accrued employee benefits			33.5						26.6
Total accrued payroll and related expenses			$	98.1					$	114.3

Schedule of Other Long-Term Liabilities

(In millions)			June 30, 2021						December 31, 2020
Finance lease obligations			$	57.4					$	54.0
Contractual obligations			12.6						12.6
Other liabilities			17.7						14.3
Total other long-term liabilities			$	87.7					$	80.9

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Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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