Restructuring Costs (Schedule Of The Components Of Restructuring Costs Included In The Consolidated Statements Of Earnings) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 6	$ 1
Lease Obligations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	2	(2)
Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	2	2
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 2	$ 1

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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