CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Net income	$ 970,876	$ 872,702	[1]	$ 798,081	[1]
Other comprehensive income (loss), net of tax
Net gain (loss) from foreign currency translation	117,331	(91,247)		165,940
Retirement and postretirement benefit plan adjustments	(17,650)	(30,909)		(3,699)
Deferred loss on interest rate hedges:
Increase in deferred loss associated with contract revaluation and settlement	(2,407)	(16,852)		0
Amount of loss reclassified to interest expense in consolidated statements of income	1,207	0		0
Other comprehensive income (loss)	98,481	(139,008)		162,241
Comprehensive Income	$ 1,069,357	$ 733,694		$ 960,322

[1] Reclassified to conform to current presentation.