Quarterly Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Quarterly Information

			Earnings from Continuing Operations		Earnings from Continuing Operations per Common Share		Net Earnings per Common Share
	Revenue			Net Earnings	Basic	Diluted	Basic	Diluted
	(In thousands, except per share amounts)
2012
First quarter	$	1,536,276	34,876	34,321	0.68	0.68	0.67	0.67
Second quarter	1,563,860		46,767	46,723	0.92	0.91	0.92	0.91
Third quarter	1,573,295		64,311	75,091	1.26	1.26	1.47	1.47
Fourth quarter	1,583,536		54,945	53,844	1.07	1.07	1.05	1.05
Full year	$	6,256,967	200,899	209,979	3.93	3.91	4.11	4.09
2011
First quarter	$	1,425,376	25,857	25,125	0.50	0.50	0.49	0.48
Second quarter	1,513,344		40,914	40,033	0.80	0.79	0.78	0.77
Third quarter	1,570,720		56,933	56,524	1.11	1.10	1.10	1.10
Fourth quarter	1,541,094		47,664	48,095	0.93	0.92	0.94	0.93
Full year	$	6,050,534	171,368	169,777	3.34	3.31	3.31	3.28