Statement of Stockholders Equity (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Net earnings Attributable to noncontrolling interests	$ 1	$ 0	$ 1	$ 1	$ 2
Cash dividends declared	$ 0.41	$ 0.38	$ 0.82	$ 0.76	$ 1.58