Restructuring and Other Initiatives (Tables)
 3 Months Ended
Mar. 31, 2016
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring and Related Costs [Table Text Block]
The following tables summarize the reserves and charges related to restructuring and other initiatives, including postemployment benefit reserves and charges, by segment:
 
GMNA
 
GME
 
GMIO
 
GMSA
 
Total
Balance at January 1, 2016
$
143

 
$
270

 
$
161

 
$
7

 
$
581

Additions, interest accretion and other
241

 
5

 
44

 
15

 
305

Payments
(23
)
 
(85
)
 
(31
)
 
(18
)
 
(157
)
Revisions to estimates and effect of foreign currency
6

 
12

 
6

 
—

 
24

Balance at March 31, 2016(a)
$
367

 
$
202

 
$
180

 
$
4

 
$
753

 
GMNA
 
GME
 
GMIO
 
GMSA
 
Total
Balance at January 1, 2015
$
459

 
$
751

 
$
166

 
$
2

 
$
1,378

Additions, interest accretion and other
9

 
127

 
37

 
11

 
184

Payments
(19
)
 
(385
)
 
(22
)
 
(11
)
 
(437
)
Revisions to estimates and effect of foreign currency
(11
)
 
(53
)
 
(10
)
 
—

 
(74
)
Balance at March 31, 2015(a)
$
438

 
$
440

 
$
171

 
$
2

 
$
1,051

________
(a)
Included temporary layoff benefits of $15 million and $353 million at March 31, 2016 and 2015 for GMNA.