Company Restructuring (Details 2) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Restructuring Reserve
Balance at the beginning of the period	$ 9
Expense incurred	44
Adjustments to liability	(1)
Payments applied against liability	(25)
Balance at the end of the period	27
Employee costs
Restructuring Reserve
Balance at the beginning of the period	6
Expense incurred	40
Adjustments to liability	(1)
Payments applied against liability	(21)
Balance at the end of the period	24
Cumulative amount incurred to date for active programs	110
Exit costs
Restructuring Reserve
Balance at the beginning of the period	3
Expense incurred	4
Payments applied against liability	(4)
Balance at the end of the period	3
Cumulative amount incurred to date for active programs	$ 54