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) | |||