Restructuring Charges (Details Textuals) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Type of Restructuring [Domain]
Restructuring Charges (Textuals) [Abstract]
Restructuring charges, net of revisions		$ 313	$ 133	$ (26)	$ 411	$ (4)
Restructuring charges, revision adjustments				61	35	4
Downsizing and Reorganizing Operations [Member]
Restructuring Charges (Textuals) [Abstract]
Restructuring charges, net of revisions	$ 35			35
Employee Severance [Member]
Restructuring Charges (Textuals) [Abstract]
Restructuring charges, net of revisions				$ (33)	$ 383	$ (7)