CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 396,518	$ 475,120
Receivables, net	518,784	494,923
Inventory, Net	386,787	378,866
Other current assets	50,688	52,951
Total current assets	1,352,777	1,401,860
Property, plant, and equipment, net	385,287	390,235
Goodwill	1,099,450	1,096,329
Other intangible assets, net	322,856	329,668
Other assets	18,689	18,229
Total assets	3,179,059	3,236,321
Current liabilities:
Current portion of long-term debt and short-term debt	982	150
Accounts payable	165,413	185,176
Accrued expenses	102,602	150,406
Income taxes payable	8,810	4,564
Deferred revenue	217,959	214,891
Other current liabilities	45,519	35,810
Total current liabilities	541,285	590,997
Long-term debt	813,576	813,989
Deferred tax liabilities, net	58,486	49,360
Accrued pension and other postretirement benefit costs	67,984	121,043
Long-term portion of environmental reserves	14,681	14,546
Other liabilities	104,072	118,586
Total liabilities	1,600,084	1,708,521
Stockholders' Equity
Common stock, $1 par value,100,000,000 shares authorized as of March 31, 2018 and December 31, 2017; 49,187,378 shares issued as of March 31, 2018 and December 31, 2017; outstanding shares were 44,235,280 as of March 31, 2018 and 44,123,519 as of December 31, 2017	49,187	49,187
Additional paid in capital	116,221	120,609
Retained earnings	1,979,051	1,944,324
Accumulated other comprehensive loss	(198,807)	(216,840)
Common treasury stock, at cost (4,952,098 shares as of March 31, 2018 and 5,063,859 shares as of December 31, 2017)	(366,677)	(369,480)
Total stockholders' equity	1,578,975	1,527,800
Total liabilities and stockholders' equity	$ 3,179,059	$ 3,236,321