Note 6: Balance Sheet Information

Certain significant amounts included in the Company's Consolidated Balance Sheets consist of the following (in millions):



	As of
	September 28, 2018			December 31, 2017
Receivables, net:
Accounts receivable	$	735.2		$	704.2
Less: Allowance for doubtful accounts	(2.2		)	(2.7		)
	$	733.0		$	701.5
Inventories:
Raw materials	$	132.1		$	117.7
Work in process	764.6			660.8
Finished goods	303.9			311.0
	$	1,200.6		$	1,089.5
Property, plant and equipment, net:
Land	$	148.5		$	148.4
Buildings	789.8			744.0
Machinery and equipment	3,756.8			3,454.6
Property, plant and equipment, gross	4,695.1			4,347.0
Less: Accumulated depreciation	(2,294.0		)	(2,067.9		)
	$	2,401.1		$	2,279.1
Accrued expenses:
Accrued payroll and related benefits	$	228.1		$	201.8
Sales related reserves	276.2			280.0
Income taxes payable	24.0			29.9
Other	98.9			101.1
	$	627.2		$	612.8

Assets classified as held-for-sale, consisting of properties and certain other assets, are required to be recorded at the lower of carrying value or fair value less costs to sell. The carrying value or the fair value less costs to sell of these assets as of September 28, 2018 and December 31, 2017 was $30.8 million and $5.3 million, respectively, and is reported as other current assets on the Company’s Consolidated Balance Sheets. The Company sold the assets held-for-sale at December 31, 2017 in January 2018 for $5.5 million.

Warranty Reserves

The activity related to the Company's warranty reserves was as follows (in millions):



	Nine Months Ended
	September 28, 2018			September 29, 2017
Beginning Balance	$	8.0		$	8.8
Provision	(0.9		)	5.9
Usage	(1.6		)	(6.9		)
Ending Balance	$	5.5		$	7.8

Defined Benefit Plans

The Company maintains defined benefit plans for certain of its foreign subsidiaries. The Company recognizes the aggregate amount of all overfunded plans as assets and the aggregate amount of all underfunded plans as liabilities in its financial statements. As of September 28, 2018, the total accrued pension liability for underfunded plans was $109.4 million, of which the current portion of $0.3 million was classified as accrued expenses. As of December 31, 2017, the total accrued pension liability for underfunded plans was $109.3 million, of which the current portion of $0.2 million was classified as accrued expenses.

The components of the Company's net periodic pension expense are as follows (in millions):



	Quarters Ended						Nine Months Ended
	September 28, 2018			September 29, 2017			September 28, 2018			September 29, 2017
Service cost	$	2.4		$	2.4		$	7.3		$	7.0
Interest cost	1.2			1.1			3.6			3.2
Expected return on plan assets	(1.5		)	(1.4		)	(4.6		)	(4.0		)
Total net periodic pension cost	$	2.1		$	2.1		$	6.3		$	6.2

With the retrospective adoption of ASU 2017-07, the service cost component is included in operating income while the other components, including the interest cost and the expected return on plan assets, are reported separately outside of operating income. The Company utilized a practical expedient within ASU 2017-07 to estimate the amounts for the comparative periods using the information previously disclosed in the notes to the consolidated financial statements in the 2017 Form 10-K. The service cost is allocated between the cost of revenue, research and development, selling and marketing and general and administrative line items, while the other components are included in other expense in the Consolidated Statements of Operations and Comprehensive Income.