2014 Organization Restructuring Narrative (Details) - USD ($) $ in Millions	12 Months Ended			27 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
2014 Organization Restructuring
Restructuring Cost and Reserve
Cash payments related to restructuring	$ 60	$ 86
After Tax
Restructuring Cost and Reserve
Restructuring Charges		$ 42	$ 95
After Tax | 2014 Organization Restructuring
Restructuring Cost and Reserve
Restructuring Charges	$ 27			$ 164
Before Tax | 2014 Organization Restructuring
Restructuring Cost and Reserve
Restructuring Charges				$ 231