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Pensions And Other Postretirement Benefits (Tables)
 12 Months Ended
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]
The following table summarizes the change in benefit obligations and related plan assets (dollars in millions):
 
Year Ended December 31, 2014
 
Year Ended December 31, 2013
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
Change in benefit obligations
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Beginning benefit obligation
$
71,480

 
$
27,528

 
$
5,110

 
$
1,238

 
$
82,110

 
$
29,301

 
$
6,271

 
$
1,528

Service cost
247

 
358

 
13

 
10

 
298

 
394

 
24

 
13

Interest cost
3,060

 
1,031

 
218

 
55

 
2,837

 
1,010

 
217

 
57

Amendments
—

 
17

 
—

 
—

 
—

 
(4
)
 
—

 
(4
)
Actuarial (gains) losses
7,770

 
3,179

 
331

 
117

 
(7,661
)
 
(1,009
)
 
(757
)
 
(210
)
Benefits paid
(5,779
)
 
(1,699
)
 
(376
)
 
(50
)
 
(5,719
)
 
(1,683
)
 
(422
)
 
(53
)
Foreign currency translation adjustments
—

 
(2,536
)
 
—

 
(108
)
 
—

 
(528
)
 
—

 
(98
)
Curtailments, settlements and other
(54
)
 
19

 
(7
)
 
74

 
(385
)
 
47

 
(223
)
 
5

Ending benefit obligation
76,724

 
27,897

 
5,289

 
1,336

 
71,480

 
27,528

 
5,110

 
1,238

Change in plan assets
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Beginning fair value of plan assets
64,166

 
14,986

 
—

 
—

 
68,085

 
15,541

 
—

 
—

Actual return on plan assets
7,346

 
1,893

 
—

 
—

 
2,107

 
988

 
—

 
—

Employer contributions
143

 
770

 
354

 
48

 
128

 
886

 
393

 
51

Benefits paid
(5,779
)
 
(1,699
)
 
(376
)
 
(50
)
 
(5,719
)
 
(1,683
)
 
(422
)
 
(53
)
Foreign currency translation adjustments
—

 
(1,232
)
 
—

 
—

 
—

 
(692
)
 
—

 
—

Settlements and other
(53
)
 
(49
)
 
22

 
2

 
(435
)
 
(54
)
 
29

 
2

Ending fair value of plan assets
65,823

 
14,669

 
—

 
—

 
64,166

 
14,986

 
—

 
—

Ending funded status
$
(10,901
)
 
$
(13,228
)
 
$
(5,289
)
 
$
(1,336
)
 
$
(7,314
)
 
$
(12,542
)
 
$
(5,110
)
 
$
(1,238
)
Amounts recorded in the consolidated balance sheets
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Non-current assets
$
—

 
$
111

 
$
—

 
$
—

 
$
—

 
$
137

 
$
—

 
$
—

Current liabilities
(69
)
 
(383
)
 
(338
)
 
(58
)
 
(131
)
 
(379
)
 
(368
)
 
(83
)
Non-current liabilities
(10,832
)
 
(12,956
)
 
(4,951
)
 
(1,278
)
 
(7,183
)
 
(12,300
)
 
(4,742
)
 
(1,155
)
Net amount recorded
$
(10,901
)
 
$
(13,228
)
 
$
(5,289
)
 
$
(1,336
)
 
$
(7,314
)
 
$
(12,542
)
 
$
(5,110
)
 
$
(1,238
)
Amounts recorded in Accumulated other comprehensive loss
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net actuarial gain (loss)
$
452

 
$
(5,019
)
 
$
(859
)
 
$
(83
)
 
$
4,747

 
$
(3,379
)
 
$
(542
)
 
$
47

Net prior service (cost) credit
35

 
(57
)
 
16

 
72

 
38

 
(87
)
 
19

 
91

Total recorded in Accumulated other comprehensive loss
$
487

 
$
(5,076
)
 
$
(843
)
 
$
(11
)
 
$
4,785

 
$
(3,466
)
 
$
(523
)
 
$
138
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

The following table summarizes the change in benefit obligations and related plan assets (dollars in millions):
 
Year Ended December 31, 2014
 
Year Ended December 31, 2013
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
Change in benefit obligations
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Beginning benefit obligation
$
71,480

 
$
27,528

 
$
5,110

 
$
1,238

 
$
82,110

 
$
29,301

 
$
6,271

 
$
1,528

Service cost
247

 
358

 
13

 
10

 
298

 
394

 
24

 
13

Interest cost
3,060

 
1,031

 
218

 
55

 
2,837

 
1,010

 
217

 
57

Amendments
—

 
17

 
—

 
—

 
—

 
(4
)
 
—

 
(4
)
Actuarial (gains) losses
7,770

 
3,179

 
331

 
117

 
(7,661
)
 
(1,009
)
 
(757
)
 
(210
)
Benefits paid
(5,779
)
 
(1,699
)
 
(376
)
 
(50
)
 
(5,719
)
 
(1,683
)
 
(422
)
 
(53
)
Foreign currency translation adjustments
—

 
(2,536
)
 
—

 
(108
)
 
—

 
(528
)
 
—

 
(98
)
Curtailments, settlements and other
(54
)
 
19

 
(7
)
 
74

 
(385
)
 
47

 
(223
)
 
5

Ending benefit obligation
76,724

 
27,897

 
5,289

 
1,336

 
71,480

 
27,528

 
5,110

 
1,238

Change in plan assets
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Beginning fair value of plan assets
64,166

 
14,986

 
—

 
—

 
68,085

 
15,541

 
—

 
—

Actual return on plan assets
7,346

 
1,893

 
—

 
—

 
2,107

 
988

 
—

 
—

Employer contributions
143

 
770

 
354

 
48

 
128

 
886

 
393

 
51

Benefits paid
(5,779
)
 
(1,699
)
 
(376
)
 
(50
)
 
(5,719
)
 
(1,683
)
 
(422
)
 
(53
)
Foreign currency translation adjustments
—

 
(1,232
)
 
—

 
—

 
—

 
(692
)
 
—

 
—

Settlements and other
(53
)
 
(49
)
 
22

 
2

 
(435
)
 
(54
)
 
29

 
2

Ending fair value of plan assets
65,823

 
14,669

 
—

 
—

 
64,166

 
14,986

 
—

 
—

Ending funded status
$
(10,901
)
 
$
(13,228
)
 
$
(5,289
)
 
$
(1,336
)
 
$
(7,314
)
 
$
(12,542
)
 
$
(5,110
)
 
$
(1,238
)
Amounts recorded in the consolidated balance sheets
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Non-current assets
$
—

 
$
111

 
$
—

 
$
—

 
$
—

 
$
137

 
$
—

 
$
—

Current liabilities
(69
)
 
(383
)
 
(338
)
 
(58
)
 
(131
)
 
(379
)
 
(368
)
 
(83
)
Non-current liabilities
(10,832
)
 
(12,956
)
 
(4,951
)
 
(1,278
)
 
(7,183
)
 
(12,300
)
 
(4,742
)
 
(1,155
)
Net amount recorded
$
(10,901
)
 
$
(13,228
)
 
$
(5,289
)
 
$
(1,336
)
 
$
(7,314
)
 
$
(12,542
)
 
$
(5,110
)
 
$
(1,238
)
Amounts recorded in Accumulated other comprehensive loss
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net actuarial gain (loss)
$
452

 
$
(5,019
)
 
$
(859
)
 
$
(83
)
 
$
4,747

 
$
(3,379
)
 
$
(542
)
 
$
47

Net prior service (cost) credit
35

 
(57
)
 
16

 
72

 
38

 
(87
)
 
19

 
91

Total recorded in Accumulated other comprehensive loss
$
487

 
$
(5,076
)
 
$
(843
)
 
$
(11
)
 
$
4,785

 
$
(3,466
)
 
$
(523
)
 
$
138
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
The following table summarizes the total accumulated benefit obligations (ABO), the fair value of plan assets for defined benefit pension plans with ABO in excess of plan assets, and the projected benefit obligation (PBO) and fair value of plan assets for defined benefit pension plans with PBO in excess of plan assets (dollars in millions):

 
December 31, 2014
 
December 31, 2013
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
ABO
$
76,702

 
$
27,425

 
$
71,461

 
$
27,069

Plans with ABO in excess of plan assets
 
 
 
 
 
 
 
ABO
$
76,702

 
$
26,510

 
$
71,461

 
$
25,897

Fair value of plan assets
$
65,823

 
$
13,638

 
$
64,166

 
$
13,663

Plans with PBO in excess of plan assets
 
 
 
 
 
 
 
PBO
$
76,724

 
$
26,935

 
$
71,480

 
$
26,788

Fair value of plan assets
$
65,823

 
$
13,643

 
$
64,166

 
$
14,109
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
The following table summarizes the total accumulated benefit obligations (ABO), the fair value of plan assets for defined benefit pension plans with ABO in excess of plan assets, and the projected benefit obligation (PBO) and fair value of plan assets for defined benefit pension plans with PBO in excess of plan assets (dollars in millions):

 
December 31, 2014
 
December 31, 2013
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
ABO
$
76,702

 
$
27,425

 
$
71,461

 
$
27,069

Plans with ABO in excess of plan assets
 
 
 
 
 
 
 
ABO
$
76,702

 
$
26,510

 
$
71,461

 
$
25,897

Fair value of plan assets
$
65,823

 
$
13,638

 
$
64,166

 
$
13,663

Plans with PBO in excess of plan assets
 
 
 
 
 
 
 
PBO
$
76,724

 
$
26,935

 
$
71,480

 
$
26,788

Fair value of plan assets
$
65,823

 
$
13,643

 
$
64,166

 
$
14,109
Schedule of Net Benefit Costs [Table Text Block]
The following table summarizes the components of net periodic pension and OPEB expense along with the assumptions used to determine benefit obligations (dollars in millions):
 
Year Ended December 31, 2014
 
Year Ended December 31, 2013
 
Year Ended December 31, 2012
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
Components of expense
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
$
380

 
$
389

 
$
13

 
$
10

 
$
395

 
$
425

 
$
24

 
$
13

 
$
590

 
$
411

 
$
23

 
$
16

Interest cost
3,060

 
1,031

 
218

 
55

 
2,837

 
1,010

 
217

 
57

 
4,055

 
1,110

 
234

 
63

Expected return on plan assets
(3,914
)
 
(873
)
 
—

 
—

 
(3,562
)
 
(823
)
 
—

 
—

 
(5,029
)
 
(870
)
 
—

 
—

Amortization of prior service cost (credit)
(4
)
 
17

 
(2
)
 
(14
)
 
(4
)
 
19

 
(116
)
 
(14
)
 
(1
)
 
1

 
(116
)
 
(12
)
Recognized net actuarial loss
(91
)
 
154

 
14

 
(6
)
 
6

 
208

 
85

 
6

 
2

 
35

 
52

 
6

Curtailments, settlements and other
(1
)
 
3

 
—

 
—

 
(77
)
 
(6
)
 
(62
)
 
—

 
2,580

 
71

 
—

 
11

Net periodic expense (income)
$
(570
)
 
$
721

 
$
243

 
$
45

 
$
(405
)
 
$
833

 
$
148

 
$
62

 
$
2,197

 
$
758

 
$
193

 
$
84

Weighted-average assumptions used to determine benefit obligations
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
3.73
%
 
3.14
%
 
3.80
%
 
3.99
%
 
4.46
%
 
4.10
%
 
4.52
%
 
4.71
%
 
3.59
%
 
3.70
%
 
3.68
%
 
3.97
%
Rate of compensation increase(a)
N/A

 
2.85
%
 
N/A

 
4.21
%
 
N/A

 
2.90
%
 
N/A

 
4.21
%
 
N/A

 
2.77
%
 
4.50
%
 
4.21
%
Weighted-average assumptions used to determine net expense
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
4.46
%
 
4.10
%
 
4.52
%
 
4.71
%
 
3.59
%
 
3.69
%
 
3.69
%
 
3.97
%
 
4.06
%
 
4.45
%
 
4.24
%
 
4.31
%
Expected rate of return on plan assets
6.53
%
 
6.28
%
 
N/A

 
N/A

 
5.77
%
 
5.70
%
 
N/A

 
N/A

 
6.18
%
 
6.20
%
 
N/A

 
N/A

Rate of compensation increase(a)
N/A

 
2.90
%
 
N/A

 
4.21
%
 
N/A

 
2.77
%
 
4.50
%
 
4.21
%
 
4.50
%
 
3.15
%
 
4.50
%
 
4.21
%
_________
(a)
As a result of ceasing the accrual of additional benefits for salaried plan participants, the rate of compensation increase does not have a significant effect on our U.S. pension and OPEB plans.
Schedule of Assumptions Used [Table Text Block]
The following table summarizes the components of net periodic pension and OPEB expense along with the assumptions used to determine benefit obligations (dollars in millions):
 
Year Ended December 31, 2014
 
Year Ended December 31, 2013
 
Year Ended December 31, 2012
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
Components of expense
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
$
380

 
$
389

 
$
13

 
$
10

 
$
395

 
$
425

 
$
24

 
$
13

 
$
590

 
$
411

 
$
23

 
$
16

Interest cost
3,060

 
1,031

 
218

 
55

 
2,837

 
1,010

 
217

 
57

 
4,055

 
1,110

 
234

 
63

Expected return on plan assets
(3,914
)
 
(873
)
 
—

 
—

 
(3,562
)
 
(823
)
 
—

 
—

 
(5,029
)
 
(870
)
 
—

 
—

Amortization of prior service cost (credit)
(4
)
 
17

 
(2
)
 
(14
)
 
(4
)
 
19

 
(116
)
 
(14
)
 
(1
)
 
1

 
(116
)
 
(12
)
Recognized net actuarial loss
(91
)
 
154

 
14

 
(6
)
 
6

 
208

 
85

 
6

 
2

 
35

 
52

 
6

Curtailments, settlements and other
(1
)
 
3

 
—

 
—

 
(77
)
 
(6
)
 
(62
)
 
—

 
2,580

 
71

 
—

 
11

Net periodic expense (income)
$
(570
)
 
$
721

 
$
243

 
$
45

 
$
(405
)
 
$
833

 
$
148

 
$
62

 
$
2,197

 
$
758

 
$
193

 
$
84

Weighted-average assumptions used to determine benefit obligations
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
3.73
%
 
3.14
%
 
3.80
%
 
3.99
%
 
4.46
%
 
4.10
%
 
4.52
%
 
4.71
%
 
3.59
%
 
3.70
%
 
3.68
%
 
3.97
%
Rate of compensation increase(a)
N/A

 
2.85
%
 
N/A

 
4.21
%
 
N/A

 
2.90
%
 
N/A

 
4.21
%
 
N/A

 
2.77
%
 
4.50
%
 
4.21
%
Weighted-average assumptions used to determine net expense
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
4.46
%
 
4.10
%
 
4.52
%
 
4.71
%
 
3.59
%
 
3.69
%
 
3.69
%
 
3.97
%
 
4.06
%
 
4.45
%
 
4.24
%
 
4.31
%
Expected rate of return on plan assets
6.53
%
 
6.28
%
 
N/A

 
N/A

 
5.77
%
 
5.70
%
 
N/A

 
N/A

 
6.18
%
 
6.20
%
 
N/A

 
N/A

Rate of compensation increase(a)
N/A

 
2.90
%
 
N/A

 
4.21
%
 
N/A

 
2.77
%
 
4.50
%
 
4.21
%
 
4.50
%
 
3.15
%
 
4.50
%
 
4.21
%
_________
(a)
As a result of ceasing the accrual of additional benefits for salaried plan participants, the rate of compensation increase does not have a significant effect on our U.S. pension and OPEB plans.
Schedule of Expected Benefit Payments [Table Text Block]
The following table summarizes net benefit payments expected to be paid in the future, which include assumptions related to estimated future employee service (dollars in millions):
 
Pension Benefits(a)
 
Other Benefits
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
2015
$
5,616

 
$
1,530

 
$
344

 
$
59

2016
$
5,572

 
$
1,570

 
$
331

 
$
63

2017
$
5,380

 
$
1,558

 
$
322

 
$
61

2018
$
5,239

 
$
1,458

 
$
313

 
$
63

2019
$
5,128

 
$
1,448

 
$
307

 
$
65

2020 - 2024
$
23,754

 
$
7,136

 
$
1,470

 
$
348

__________
(a)
Benefits for most U.S. pension plans and certain non-U.S. pension plans are paid out of plan assets rather than our Cash and cash equivalents.
Pension Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of contributions to employee benefit plans
The following table summarizes contributions made to the defined benefit pension plans (dollars in millions):
 
Years Ended December 31,
 
2014
 
2013
 
2012
U.S. hourly and salaried
$
143

 
$
128

 
$
2,420

Non-U.S.
770

 
886

 
855

Total
$
913

 
$
1,014

 
$
3,275
Schedules of Fair Value of Plan Assets by Asset Class and Target Allocations [Table Text Block]
The following table summarizes the target allocations by asset category for U.S. and non-U.S. defined benefit pension plans:
 
December 31, 2014
 
December 31, 2013
 
U.S. Plans
 
Non-U.S. Plans
 
U.S. Plans
 
Non-U.S. Plans
Equity
16
%
 
27
%
 
19
%
 
28
%
Debt
60
%
 
47
%
 
58
%
 
49
%
Other(a)
24
%
 
26
%
 
23
%
 
23
%
Total
100
%
 
100
%
 
100
%
 
100
%

__________
(a)
Primarily includes private equity, real estate and absolute return strategies which mainly consist of hedge funds.

Assets and Fair Value Measurements

The following tables summarize the fair value of U.S. defined benefit pension plan assets by asset class (dollars in millions):
 
December 31, 2014
 
December 31, 2013
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents and other short-term investments
$
—

 
$
42

 
$
—

 
$
42

 
$
—

 
$
411

 
$
—

 
$
411

Common and preferred stocks
10,033

 
30

 
3

 
10,066

 
10,234

 
70

 
6

 
10,310

Government and agency debt securities(a)
—

 
16,143

 
—

 
16,143

 
—

 
14,971

 
—

 
14,971

Corporate and other debt securities(b)
—

 
22,725

 
83

 
22,808

 
—

 
20,647

 
130

 
20,777

Investment funds(c)
70

 
910

 
5,221

 
6,201

 
99

 
1,018

 
5,174

 
6,291

Private equity and debt investments(d)
—

 
—

 
5,909

 
5,909

 
—

 
—

 
6,335

 
6,335

Real estate investments(e)
560

 
2

 
3,608

 
4,170

 
390

 
4

 
4,127

 
4,521

Other investments
—

 
—

 
65

 
65

 
—

 
—

 
62

 
62

Derivative assets
55

 
313

 
1

 
369

 
17

 
157

 
—

 
174

Total assets
10,718

 
40,165

 
14,890

 
65,773

 
10,740

 
37,278

 
15,834

 
63,852

Liabilities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities
(23
)
 
(496
)
 
—

 
(519
)
 
(22
)
 
(311
)
 
(6
)
 
(339
)
Net plan assets subject to leveling
$
10,695

 
$
39,669

 
$
14,890

 
65,254

 
$
10,718

 
$
36,967

 
$
15,828

 
63,513

Other plan assets and liabilities(f)
 
 
 
 
 
 
569

 
 
 
 
 
 
 
653

Net Plan Assets
 
 
 
 
 
 
$
65,823

 
 
 
 
 
 
 
$
64,166


The following tables summarize the fair value of non-U.S. defined benefit pension plan assets by asset class (dollars in millions):
 
December 31, 2014
 
December 31, 2013
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents and other short-term investments
$
—

 
$
207

 
$
—

 
$
207

 
$
—

 
$
156

 
$
—

 
$
156

Common and preferred stocks
1,959

 
3

 
—

 
1,962

 
1,816

 
6

 
—

 
1,822

Government and agency debt securities(a)
—

 
3,614

 
—

 
3,614

 
—

 
3,418

 
—

 
3,418

Corporate and other debt securities(b)
—

 
1,986

 
—

 
1,986

 
—

 
2,475

 
14

 
2,489

Investment funds(c)
101

 
3,409

 
889

 
4,399

 
128

 
3,529

 
745

 
4,402

Private equity and debt investments(d)
—

 
—

 
509

 
509

 
—

 
—

 
430

 
430

Real estate investments(e)
20

 
4

 
1,263

 
1,287

 
13

 
12

 
1,405

 
1,430

Other investments
—

 
—

 
722

 
722

 
—

 
—

 
618

 
618

Derivative assets
17

 
24

 
—

 
41

 
3

 
44

 
—

 
47

Total assets
2,097

 
9,247

 
3,383

 
14,727

 
1,960

 
9,640

 
3,212

 
14,812

Liabilities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities
—

 
(44
)
 
—

 
(44
)
 
(12
)
 
(56
)
 
—

 
(68
)
Net plan assets subject to leveling
$
2,097

 
$
9,203

 
$
3,383

 
14,683

 
$
1,948

 
$
9,584

 
$
3,212

 
14,744

Other plan assets and liabilities(f)
 
 
 
 
 
 
(14
)
 
 
 
 
 
 
 
242

Net Plan Assets
 
 
 
 
 
 
$
14,669

 
 
 
 
 
 
 
$
14,986

__________
(a)
Includes U.S. and sovereign government and agency issues.
(b)
Includes mortgage and asset-backed securities.
(c)
U.S. and non-U.S. Level 3 assets consist primarily of funds of hedge funds. Non-U.S. Level 2 assets consist primarily of equity and fixed income funds.
(d)
Includes private equity investment funds.
(e)
Includes investment funds and public real estate investment trusts.
(f)
Cash held by the plans, net of amounts receivable/payable for unsettled security transactions and payables for investment manager fees, custody fees and other expenses.
Schedules of U.S. and Non-US Pension Level 3 Plan Assets Rollforward [Table Text Block]
The following tables summarize the activity for U.S. defined benefit pension plan net assets measured at fair value using Level 3 inputs (dollars in millions):
 
Balance at January 1, 2014
 
Net Realized/Unrealized
Gains (Losses)
 
Purchases, Sales and
Settlements, Net
 
Transfers Into/Out of Level 3
 
Balance at December 31, 2014
 
Change in Unrealized Gains/(Losses) Attributable to Assets Held at
December 31, 2014
Common and preferred stocks
$
6

 
$
2

 
$
(5
)
 
$
—

 
$
3

 
$
—

Corporate and other debt securities
130

 
—

 
(41
)
 
(6
)
 
83

 
(4
)
Investment funds
5,174

 
231

 
(184
)
 
—

 
5,221

 
208

Private equity and debt investments
6,335

 
651

 
(1,077
)
 
—

 
5,909

 
27

Real estate investments
4,127

 
251

 
(770
)
 
—

 
3,608

 
68

Other investments
62

 
5

 
(2
)
 
—

 
65

 
5

Derivatives, net
(6
)
 
(4
)
 
11

 
—

 
1

 
—

Total net assets
$
15,828

 
$
1,136

 
$
(2,068
)
 
$
(6
)
 
$
14,890

 
$
304

 
Balance at January 1, 2013
 
Net Realized/Unrealized
Gains (Losses)
 
Purchases, Sales and
Settlements, Net
 
Transfers Into/Out of Level 3
 
Balance at December 31, 2013
 
Change in Unrealized Gains/(Losses) Attributable to Assets Held at
December 31, 2013
Common and preferred stocks
$
19

 
$
3

 
$
(16
)
 
$
—

 
$
6

 
$
1

Corporate and other debt securities
182

 
6

 
(58
)
 
—

 
130

 
(3
)
Investment funds
4,959

 
552

 
(337
)
 
—

 
5,174

 
537

Private equity and debt investments
6,400

 
926

 
(991
)
 
—

 
6,335

 
436

Real estate investments
4,335

 
458

 
(666
)
 
—

 
4,127

 
190

Other investments
63

 
(2
)
 
1

 
—

 
62

 
(2
)
Derivatives, net
(8
)
 
2

 
—

 
—

 
(6
)
 
1

Total net assets
$
15,950

 
$
1,945

 
$
(2,067
)
 
$
—

 
$
15,828

 
$
1,160


The following tables summarize the activity for non-U.S. defined benefit pension plan assets measured at fair value using Level 3 inputs (dollars in millions):
 
Balance at January 1, 2014
 
Net Realized/Unrealized
Gains (Losses)
 
Purchases, Sales and
Settlements, Net
 
Transfers Into/Out of Level 3
 
Effect of Foreign Currency
 
Balance at December 31, 2014
 
Change in Unrealized Gains/(Losses) Attributable to Assets Held at
December 31, 2014
Corporate and other debt securities
$
14

 
$
—

 
$
(13
)
 
$
—

 
$
(1
)
 
$
—

 
$
—

Investment funds
745

 
103

 
111

 
—

 
(70
)
 
889

 
103

Private equity and debt investments
430

 
100

 
20

 
—

 
(41
)
 
509

 
75

Real estate investments
1,405

 
48

 
(84
)
 
—

 
(106
)
 
1,263

 
44

Other investments
618

 
92

 
72

 
—

 
(60
)
 
722

 
76

Total assets
$
3,212

 
$
343

 
$
106

 
$
—

 
$
(278
)
 
$
3,383

 
$
298

 
Balance at January 1, 2013
 
Net Realized/Unrealized
Gains (Losses)
 
Purchases, Sales and
Settlements, Net
 
Transfers Into/Out of Level 3
 
Effect of Foreign Currency
 
Balance at December 31, 2013
 
Change in Unrealized Gains/(Losses) Attributable to Assets Held at
December 31, 2013
Corporate and other debt securities
$
5

 
$
1

 
$
7

 
$
1

 
$
—

 
$
14

 
$
1

Investment funds
641

 
110

 
27

 
—

 
(33
)
 
745

 
112

Private equity and debt investments
381

 
73

 
3

 
—

 
(27
)
 
430

 
53

Real estate investments
1,422

 
103

 
(57
)
 
—

 
(63
)
 
1,405

 
122

Other investments
665

 
(10
)
 
(43
)
 
—

 
6

 
618

 
4

Total assets
$
3,114

 
$
277

 
$
(63
)
 
$
1

 
$
(117
)
 
$
3,212

 
$
292
OPEB Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of contributions to employee benefit plans
The following table summarizes contributions to the U.S. OPEB plans (dollars in millions):
 
Years Ended December 31,
 
2014
 
2013
 
2012
Employer contributions
$
354

 
$
393

 
$
432

Plan participants' contributions
22

 
29

 
4

Total contributions
$
376

 
$
422

 
$
436