Restructuring Plan Restructuring Plan - Charges Related to Restructuring (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	$ 2	$ 16
Discrete charge under ASC 712 [Member] | Severance and other employee related charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	0	(2)
Severance charge under ASC 420 [Member] | Severance and other employee related charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	0	2
Cost of Products [Member] | inventory related charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	0	1
Software and Software Development Costs [Member] | Asset related charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	1	0
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Asset related charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	0	14
Other exit costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges	$ 1	$ 1