Restructuring Related Activities 2011 (Details) (USD $) In Millions, unless otherwise specified	36 Months Ended	5 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011 2011 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Plan [Member] Other [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Related To Plan [Member] Other [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Plan [Member] Other [Member] 2011 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Related To Plan [Member] Other [Member] 2011 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan			$ 155	$ 125	$ 20	$ 10	$ 210	$ 150	$ 40	$ 20
Restructuring and Related Cost, Cost Incurred to Date	318	35
Restructuring plan estimated future cash outflow			$ 150				$ 200