Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 741,162	$ 613,304
Receivables, net	379,777	304,204
Inventories, net	228,398	207,980
Deferred income taxes	22,157	28,767
Other current assets	42,656	41,243
Total current assets	1,414,150	1,195,498
Property, plant and equipment, less accumulated depreciation	316,385	300,835
Goodwill	943,374	773,048
Intangible assets, less accumulated amortization	461,292	376,976
Deferred income taxes	40,652	26,034
Other long-lived assets	86,974	79,362
Total assets	3,262,827	2,751,753
Current liabilities:
Accounts payable	272,439	199,897
Accrued liabilities	250,420	199,169
Current maturities of long-term debt	2,500	2,500
Total current liabilities	525,359	401,566
Long-term debt	1,765,422	1,364,536
Postretirement benefits	122,627	105,924
Other long-term liabilities	42,233	43,186
Stockholders' equity:
Preferred stock, par value $0.01 per share - 2,000 shares authorized; no shares outstanding
Common stock, par value $0.01 per share - 200,000 shares authorized; 50,335 shares issued; 42,464 and 43,455 shares outstanding at 2014 and 2013, respectively	503	503
Additional paid-in capital	595,389	585,753
Retained earnings	621,896	556,214
Accumulated other comprehensive loss	(46,031)	(29,181)
Treasury stock, at cost - 7,871 and 6,880 shares at 2014 and 2013, respectively	(364,571)	(276,748)
Total stockholders' equity	807,186	836,541
Total liabilities and stockholders' equity	$ 3,262,827	$ 2,751,753