Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Data

	2012												2011
	4th			3rd			2nd			1st			4th			3rd			2nd			1st
Total revenues		$22,302			$20,008			$20,005			$19,383			$19,555			$17,727			$16,543			$14,910
Total costs and expenses	(19,041		)	(16,794		)	(16,740		)	(16,069		)	(16,261		)	(14,357		)	(13,200		)	(12,049		)
Earnings from operations	1,629			1,564			1,548			1,570			1,597			1,714			1,534			1,000
Net earnings from continuing operations	978			1,034			967			924			1,387			1,094			942			588
Net gain/(loss) from disposal of discontinued operations				(2		)				(1		)	6			4			(1		)	(2		)
Net earnings	978			1,032			967			923			1,393			1,098			941			586
Basic earnings per share from continuing operations	1.29			1.36			1.28			1.23			1.85			1.47			1.27			0.79
Basic earnings per share	1.29			1.36			1.28			1.23			1.86			1.47			1.27			0.79
Diluted earnings per share from continuing operations	1.28			1.35			1.27			1.22			1.83			1.46			1.25			0.78
Diluted earnings per share	1.28			1.35			1.27			1.22			1.84			1.46			1.25			0.78
Cash dividends declared per share	0.925						0.88						0.86						0.84
Common stock sales price per share:
High	76.56			75.96			77.83			76.74			74.74			76.20			80.65			74.47
Low	69.20			69.03			66.82			72.30			56.90			56.01			70.29			66.00
Quarter end	75.36			69.60			74.30			74.37			73.35			60.51			73.93			73.93