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Financial Statement Details (Tables)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Short Term Marketable Securities, Available for Sale

Short-Term Marketable Securities

Short-term marketable securities, consisting of equity and debt securities, were as follows:



	September 30, 2018
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Market Value

Equity investment in Tandem Diabetes Care, Inc	$	2.0	$	40.8	$	—		$	42.8

Debt securities, available for sale
U.S. government agencies	$	189.7	$	—	$	(0.1	)	$	189.6
Commercial paper	67.9		—		—			67.9
Corporate debt	1.0		—		—			1.0
Total available-for-sale debt securities	$	258.6	$	—	$	(0.1	)	$	258.5

Total marketable securities	$	260.6	$	40.8	$	(0.1	)	$	301.3



	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Market Value
U.S. government agencies	$	87.5	$	—	$	(0.2	)	$	87.3
Corporate debt	14.7		—		—			14.7
Commercial paper	5.1		—		—			5.1
Total marketable securities	$	107.3	$	—	$	(0.2	)	$	107.1

Net Gain Recognized on Equity Securities

The following table reconciles the net gain recognized on equity securities during the three and nine months ended September 30, 2018 and 2017 to the unrealized gain recognized during the periods on equity securities still held at the reporting date.



	Three Months Ended September 30,					Nine Months Ended September 30,
	2018			2017		2018			2017
Net gains recognized during the period on equity securities	$	34.9		$	—	$	85.0		$	—
Less: Net gains recognized during the period on equity securities sold during the period	(14.1		)	—		(44.2		)	—
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$	20.8		$	—	$	40.8		$	—

Inventory



	September 30, 2018		December 31, 2017
Raw materials	$	21.8	$	20.0
Work-in-process	10.6		8.2
Finished goods	22.8		17.0
Total	$	55.2	$	45.2

Property, Plant and Equipment

Property and Equipment



	September 30, 2018			December 31, 2017
Building ⁽¹⁾	$	6.0		$	6.0
Furniture and fixtures	8.5			5.7
Computer equipment	28.6			25.6
Machinery and equipment	67.6			33.8
Leasehold improvements	78.1			41.7
Construction in progress	53.1			87.6
Total	241.9			200.4
Accumulated depreciation and amortization	(72.3		)	(54.8		)
Property and equipment, net	$	169.6		$	145.6

(1) As described in Footnote 6 “Commitments and Contingencies,” although we do not legally own these premises, we were deemed the owner of the construction project during the construction period of our new manufacturing facility in Mesa, Arizona under a build-to-suit lease arrangement.

Accounts Payable and Accrued Liabilities



	September 30, 2018		December 31, 2017
Accounts payable trade	$	57.7	$	46.7
Accrued tax, audit, and legal fees	18.3		7.1
Accrued rebates	34.7		13.9
Accrued warranty	6.4		8.8
Accrued other	18.3		10.7
Total	$	135.4	$	87.2

Accrued Warranty

Warranty costs are reflected in the consolidated statements of operations as product cost of sales. A reconciliation of our accrued warranty costs for the three and nine months ended September 30, 2018 and 2017 were as follows:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Beginning balance	$	7.5		$	8.3		$	8.8		$	9.8
Charges to costs and expenses	3.9			5.4			11.8			13.9
Costs incurred	(5.0		)	(5.0		)	(14.2		)	(15.0		)
Ending balance	$	6.4		$	8.7		$	6.4		$	8.7

Other Liabilities



	September 30, 2018		December 31, 2017
Financing lease obligations	$	7.3	$	6.7
Deferred rent	7.5		8.7
Other	4.6		2.8
Total	$	19.4	$	18.2

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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- Definition

Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.

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