Supplemental Balance Sheet Information

12 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts Receivable

Accounts receivable consist of the following (in millions):



	As of December 31,
	2017			2016
Accounts Receivable	$	204.9		$	190.0
Allowances and doubtful accounts	(1.9		)	(1.5		)
Accounts receivable, net	$	203.0		$	188.5

Inventories

Inventories at the lower of cost (determined on the LIFO/FIFO or weighted-average cost methods) or market consists of the following (in millions):



	As of December 31,
	2017								2016
	LIFO			Non- LIFO		Total			LIFO			Non- LIFO		Total
Raw Materials	$	26.6		$	1.5	$	28.1		$	24.5		$	0.8	$	25.3
Work in process	20.4			0.3		20.7			16.2			0.1		16.3
Finished goods	40.0			9.6		49.6			37.1			8.2		45.3
Supplies and other	—			5.7		5.7			—			5.8		5.8
	87.0			17.1		104.1			77.8			14.9		92.7
Excess of FIFO or weighted-average cost over LIFO cost	(13.0		)	—		(13.0		)	(12.0		)	—		(12.0		)
Total	$	74.0		$	17.1	$	91.1		$	65.8		$	14.9	$	80.7

Property, Plant and Equipment

Property, plant and equipment consists of the following (in millions):



	As of December 31,
	2017			2016
Land	$	1.0		$	—
Buildings and leasehold improvements	41.0			39.1
Machinery and equipment	124.4			136.8
Construction in progress	21.5			16.4
	187.9			192.3
Less accumulated depreciation	(78.0		)	(83.0		)
Total	$	109.9		$	109.3

There were $3 million and $5 million of capital expenditures in accounts payable as of December 31, 2017 and 2016, respectively.

As of the years ended December 31, 2017 and 2016, we held $57 million and $58 million, respectively, of net property, plant and equipment in the United States.

Depreciation expense was $19 million, $20 million and $17 million, respectively, in the years ended December 31, 2017, 2016 and 2015.

Intangible Assets

Intangible assets subject to amortization consist of the following (in millions):



	As of December 31,
	2017							2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Trademarks	$	125.9	$	(97.6	)	$	28.3	$	125.9	$	(93.8	)	$	32.1
Patents and acquired technologies	253.0		(146.1		)	106.9		251.8		(131.1		)	120.7
Other	43.1		(35.1		)	8.0		42.9		(33.2		)	9.7
Total	$	422.0	$	(278.8	)	$	143.2	$	420.6	$	(258.1	)	$	162.5

As of December 31, 2017, we had $6 million of indefinite-lived intangible assets that we acquired in connection with the Acquisition related to in-process research and development projects. Amortization expense for intangible assets was $21 million, $21 million and $25 million for the years ended December 31, 2017, 2016 and 2015, respectively.

We estimate amortization expense for the next five years and beyond will be as follows (in millions):



For the years ending December 31,
2018	$	18.2
2019	15.3
2020	13.1
2021	10.9
2022	10.4
Thereafter	75.3
Total	$	143.2

Accrued Expenses

Accrued expenses consist of the following (in millions):



	As of December 31,
	2017		2016
Accrued rebates	$	64.4	$	55.7
Accrued salaries and wages	44.5		49.9
Accrued taxes - income and other	6.8		4.4
Other	29.2		28.4
Total	$	144.9	$	138.4

Other Long-Term Liabilities

Other long-term liabilities consist of the following (in millions):



	As of December 31,
	2017		2016
Taxes payable	$	10.0	$	3.4
Accrued compensation benefits	4.6		4.4
Other	17.2		16.0
Total	$	31.8	$	23.8