DETAILS OF CERTAIN CONSOLIDATED BALANCE SHEET CAPTIONS

The following tables present financial information of certain consolidated balance sheet captions.

Accounts Receivable, net — Accounts receivable, net were:



	December 31,
	2014			2013
	(Amounts in thousands)
Accounts receivable	$	1,107,916		$	1,179,400
Less: allowance for doubtful accounts	(25,469		)	(24,073		)
Accounts receivable, net	$	1,082,447		$	1,155,327

As disclosed in Note 1, we reclassified a portion of our accounts receivable to long-term within other assets, net on our December 31, 2014 consolidated balance sheet.

Property, Plant and Equipment, net — Property, plant and equipment, net were:



	December 31,
	2014			2013
	(Amounts in thousands)
Land	$	76,645		$	79,557
Buildings and improvements	405,733			420,364
Machinery, equipment and tooling	668,710			694,179
Software, furniture and fixtures and other	379,774			372,052
Gross property, plant and equipment	1,530,862			1,566,152
Less: accumulated depreciation	(836,981		)	(849,863		)
Property, plant and equipment, net	$	693,881		$	716,289

Accrued Liabilities — Accrued liabilities were:



	December 31,
	2014		2013
	(Amounts in thousands)
Wages, compensation and other benefits	$	226,488	$	238,238
Commissions and royalties	34,194		38,609
Customer advance payments	303,527		340,136
Progress billings in excess of accumulated costs	22,098		40,718
Warranty costs and late delivery penalties	47,738		63,935
Sales and use tax	16,274		15,508
Income tax	37,451		21,939
Other	106,302		101,927
Accrued liabilities	$	794,072	$	861,010

"Other" accrued liabilities include professional fees, lease obligations, insurance, interest, freight, restructuring charges, accrued cash dividends payable, legal and environmental matters, derivative liabilities and other items, none of which individually exceed 5% of current liabilities.

Retirement Obligations and Other Liabilities — Retirement obligations and other liabilities were:



	December 31,
	2014		2013
	(Amounts in thousands)
Pension and postretirement benefits	$	195,429	$	199,634
Deferred taxes	118,780		110,251
Legal and environmental	27,606		35,250
Uncertain tax positions	69,284		82,689
Other	41,412		46,070
Retirement obligations and other liabilities	$	452,511	$	473,894