CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net loss	$ (12.4)	$ (12.4)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	47.0	42.5
Stock-based compensation expense	29.7	25.8
Non-cash interest expense	4.3	31.9
Loss on extinguishment of debt	0.0	41.6
Provision for credit losses	3.1	2.8
Other	1.1	0.2
Changes in operating assets and liabilities:
Accounts receivable	(28.3)	(25.9)
Accounts receivable — related party	(22.5)	(14.1)
Inventories	(34.5)	(108.1)
Prepaid expenses and other assets	(32.1)	(28.2)
Accounts payable	23.3	6.0
Accrued expenses and other liabilities	87.8	(5.6)
Accrued expenses and other liabilities — related party	1.8	0.9
Net cash provided by (used in) operating activities	68.3	(42.6)
Cash flows from investing activities
Capital expenditures	(58.5)	(80.1)
Acquisition of intangible assets	(10.4)	(5.7)
Acquisition	(26.0)	0.0
Cash paid for investments	(7.8)	0.0
Receipts from the maturity or sale of marketable securities	0.0	39.5
Net cash used in investing activities	(102.7)	(46.3)
Cash flows from financing activities
Proceeds from issuance of convertible debt, net of issuance costs	0.0	489.5
Repayment of convertible debt	0.0	(460.8)
Proceeds from equipment financing, net	0.0	43.1
Repayment of equipment financings	(13.0)	(9.6)
Repayment of mortgage	(1.6)	(1.5)
Repayment of term loan	(3.7)	(1.3)
Payment of debt issuance costs	0.0	(4.0)
Proceeds from exercise of stock options	4.3	10.5
Proceeds from issuance of common stock under employee stock purchase plan	4.9	3.9
Payment of withholding taxes in connection with vesting of restricted stock units	(16.7)	(27.6)
Net cash (used in) provided by financing activities	(25.8)	42.2
Effect of exchange rate changes on cash	(9.1)	(3.9)
Net decrease in cash, cash equivalents and restricted cash	(69.3)	(50.6)
Cash, cash equivalents and restricted cash at beginning of period	806.4	922.0
Cash, cash equivalents and restricted cash at end of period	737.1	871.4
Supplemental noncash information:
Purchases of property and equipment included in accounts payable and accrued expenses	6.0	3.2
Purchases of intangible assets included in accounts payable and accrued expenses	0.8	7.3
Lease liabilities arising from obtaining right-of-use assets	$ 12.1	$ 0.5