Comprehensive Income (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Reclassifications out of accumulated other comprehensive income (loss)
Interest expense	$ 6,448	$ 6,610	$ 13,403	$ 13,491
Corporate general and administrative expense	(31,918)	(31,206)	(64,520)	(69,048)
Income tax expense	(91,366)	(95,660)	(184,443)	(159,285)
NET EARNINGS	207,340	192,521	420,596	369,696
Less: Noncontrolling interest	45,928	31,331	92,726	53,624
Net of tax and noncontrolling interest	161,412	161,190	327,870	316,072
Defined benefit pension plan | Reclassifications out of accumulated other comprehensive income (loss)
Reclassifications out of accumulated other comprehensive income (loss)
Various accounts, primarily cost of revenue and corporate general and administrative expense	(3,210)		(6,446)
Income tax expense	1,203		2,417
NET EARNINGS	(2,007)		(4,029)
Unrealized loss on derivative contracts | Reclassifications out of accumulated other comprehensive income (loss)
Reclassifications out of accumulated other comprehensive income (loss)
Income tax expense	326		366
NET EARNINGS	(531)		(598)
Less: Noncontrolling interest			1
Net of tax and noncontrolling interest	(531)		(599)
Unrealized loss on derivative contracts | Reclassifications out of accumulated other comprehensive income (loss) | Commodity contracts and foreign currency contracts
Reclassifications out of accumulated other comprehensive income (loss)
Total cost of revenue	(437)		(125)
Unrealized loss on derivative contracts | Reclassifications out of accumulated other comprehensive income (loss) | Interest rate contracts
Reclassifications out of accumulated other comprehensive income (loss)
Interest expense	(420)		(839)
Unrealized gain on available-for- sale securities | Reclassifications out of accumulated other comprehensive income (loss)
Reclassifications out of accumulated other comprehensive income (loss)
Corporate general and administrative expense	98		136
Income tax expense	(37)		(51)
NET EARNINGS	$ 61		$ 85