Asset Impairment, Exit, Implementation and Integration Costs (Movement in the Severance Liability and Details of Asset Impairment and Exit Costs) (Details) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Severance liability beginning balance	$ 26
Charges	3
Cash spent	(28)
Other	4
Severance liability ending balance	5
Severance [Member]
Severance liability beginning balance	26
Cash spent	(21)
Severance liability ending balance	5
Other [Member]
Severance liability beginning balance
Charges	3
Cash spent	(7)
Other	4
Severance liability ending balance