CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities
Net income	$ 43,970	$ 52,796
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	54,978	55,593
Excess tax (benefit) expense from share-based payment arrangements	203	(431)
Share-based compensation	4,885	4,680
Deferred income taxes	2,371	6,416
Income of unconsolidated affiliated company	(644)	(823)
Loss (gain) on sale of property and equipment	(333)	780
Net facility consolidation and other costs	350
Changes in working capital, excluding effect of acquisitions	(62,414)	(132,516)
Net change in deferred charges and credits	5,454	5,193
Net cash provided by (used in) operating activities	48,820	(8,312)
Cash flows from investing activities
Additions to property and equipment	(23,677)	(27,917)
Business acquisitions and adjustments, net of cash acquired		(15,826)
Proceeds from sale of property and equipment	1,298	658
Net cash used in investing activities	(22,379)	(43,085)
Cash flows from financing activities
Repayment of long-term debt	(1,124)	(91)
Net borrowing (repayment) of commercial paper	4,500	133,300
Net borrowing (repayment) of short-term debt	993	89
Cash dividends paid to shareholders	(26,086)	(26,104)
Common stock purchased for the treasury		(54,345)
Purchase of subsidiary shares of noncontrolling interests		(380)
Excess tax benefit (expense) from share-based payment arrangements	(203)	431
Stock incentive programs and related withholdings	(1,616)	(3,457)
Net cash (used in) provided by financing activities	(23,536)	49,443
Effect of exchange rates on cash and cash equivalents	284	(2,385)
Net increase (decrease) in cash and cash equivalents	3,189	(4,339)
Cash and cash equivalents balance at beginning of year	109,796	60,404
Cash and cash equivalents balance at end of period	112,985	56,065
Business acquisitions and adjustments, net of cash acquired:
Working capital acquired, net	(54)	16,034
Goodwill and intangible assets acquired, net	192	(858)
Fixed and other long-term assets	(138)	961
Deferred taxes and other liabilities		(311)
Cash used for acquisitions		15,826
Interest paid during the period	26,185	26,230
Income taxes paid during the period	$ 22,887	$ 17,707