CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income before allocation to noncontrolling interests	$ 59,909	$ 55,414	$ 108,781	$ 113,356
Currency translation adjustment	11,889	(2,427)	9,353	(22,328)
Changes in pension and postretirement plan assets and benefit obligation, net of tax benefit	804	2,478	2,312	4,582
Other comprehensive income (loss)	12,693	51	11,665	(17,746)
Comprehensive income before allocation to noncontrolling interests	72,602	55,465	120,446	95,610
Less: Noncontrolling interests in comprehensive income (loss)	262	386	425	547
Comprehensive income attributable to common shareholders	$ 72,340	$ 55,079	$ 120,021	$ 95,063