Company Restructuring (Details 2) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011
Restructuring Reserve
Balance at the beginning of the period	$ 16
Expense incurred	21
Adjustments to liability	(9)
Payments applied against liability	(18)
Balance at the end of the period	10
Employee costs
Restructuring Reserve
Balance at the beginning of the period	13
Expense incurred	16
Adjustments to liability	(9)
Payments applied against liability	(15)
Balance at the end of the period	5
Cumulative amount incurred to date for active programs	106
Exit costs
Restructuring Reserve
Balance at the beginning of the period	3
Expense incurred	5
Payments applied against liability	(3)
Balance at the end of the period	5
Cumulative amount incurred to date for active programs	$ 45