Employee Benefit Plans - Pension and Postretirement Plans (Details) - USD ($)
|
12 Months Ended |
|
|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2017 |
Dec. 31, 2016 |
| Change in fair value of plan assets |
|
|
|
|
|
| Fair value, January 1 |
$ 23,772,000,000
|
|
|
|
|
| Fair value, December 31 |
25,675,000,000
|
$ 23,772,000,000
|
|
|
|
| U.S. | Other Pension Plan |
|
|
|
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Company contributions |
0
|
0
|
|
|
|
| U.S. | Postretirement Health and Life Plans |
|
|
|
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Fair value, January 1 |
0
|
0
|
|
|
|
| Actual return on plan assets |
0
|
0
|
|
|
|
| Company contributions |
393,000,000
|
104,000,000
|
|
|
|
| Plan participant contributions |
125,000,000
|
125,000,000
|
|
|
|
| Settlements and curtailments |
0
|
0
|
|
|
|
| Benefits paid |
(230,000,000)
|
(242,000,000)
|
|
|
|
| Federal subsidy on benefits paid |
12,000,000
|
13,000,000
|
|
|
|
| Fair value, December 31 |
300,000,000
|
0
|
$ 0
|
|
|
| Change in projected benefit obligation |
|
|
|
|
|
| Projected benefit obligation, January 1 |
1,125,000,000
|
1,152,000,000
|
|
|
|
| Service cost |
6,000,000
|
7,000,000
|
8,000,000
|
|
|
| Interest cost |
43,000,000
|
47,000,000
|
48,000,000
|
|
|
| Plan participant contributions |
125,000,000
|
125,000,000
|
|
|
|
| Plan amendments |
(19,000,000)
|
0
|
|
|
|
| Settlements and curtailments |
0
|
0
|
|
|
|
| Actuarial loss (gain) |
(7,000,000)
|
25,000,000
|
|
|
|
| Benefits paid |
(230,000,000)
|
(242,000,000)
|
|
|
|
| Federal subsidy on benefits paid |
12,000,000
|
13,000,000
|
|
|
|
| Foreign currency exchange rate changes |
1,000,000
|
(2,000,000)
|
|
|
|
| Projected benefit obligation, December 31 |
1,056,000,000
|
1,125,000,000
|
1,152,000,000
|
|
|
| Amounts recognized on Consolidated Balance Sheet |
|
|
|
|
|
| Other assets |
|
|
|
$ 0
|
$ 0
|
| Accrued expenses and other liabilities |
|
|
|
(756,000,000)
|
(1,125,000,000)
|
| Net amount recognized, December 31 |
|
|
|
(756,000,000)
|
(1,125,000,000)
|
| Funded status, December 31 |
|
|
|
|
|
| Projected benefit obligation |
1,125,000,000
|
1,152,000,000
|
1,152,000,000
|
$ 1,056,000,000
|
$ 1,125,000,000
|
| Weighted-average assumptions, December 31 |
|
|
|
|
|
| Discount rate |
|
|
|
3.58%
|
3.99%
|
| U.S. | Qualified | Pension Plan |
|
|
|
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Fair value, January 1 |
18,239,000,000
|
17,962,000,000
|
|
|
|
| Actual return on plan assets |
2,285,000,000
|
1,075,000,000
|
|
|
|
| Company contributions |
0
|
0
|
|
|
|
| Plan participant contributions |
0
|
0
|
|
|
|
| Settlements and curtailments |
0
|
0
|
|
|
|
| Benefits paid |
(816,000,000)
|
(798,000,000)
|
|
|
|
| Fair value, December 31 |
19,708,000,000
|
18,239,000,000
|
17,962,000,000
|
|
|
| Change in projected benefit obligation |
|
|
|
|
|
| Projected benefit obligation, January 1 |
14,982,000,000
|
14,461,000,000
|
|
|
|
| Service cost |
0
|
0
|
0
|
|
|
| Interest cost |
606,000,000
|
634,000,000
|
621,000,000
|
|
|
| Plan participant contributions |
0
|
0
|
|
|
|
| Plan amendments |
0
|
0
|
|
|
|
| Settlements and curtailments |
0
|
0
|
|
|
|
| Actuarial loss (gain) |
934,000,000
|
685,000,000
|
|
|
|
| Benefits paid |
(816,000,000)
|
(798,000,000)
|
|
|
|
| Projected benefit obligation, December 31 |
15,706,000,000
|
14,982,000,000
|
14,461,000,000
|
|
|
| Amounts recognized on Consolidated Balance Sheet |
|
|
|
|
|
| Other assets |
|
|
|
$ 4,002,000,000
|
$ 3,257,000,000
|
| Accrued expenses and other liabilities |
|
|
|
0
|
0
|
| Net amount recognized, December 31 |
|
|
|
4,002,000,000
|
3,257,000,000
|
| Funded status, December 31 |
|
|
|
|
|
| Accumulated benefit obligation |
|
|
|
15,706,000,000
|
14,982,000,000
|
| Overfunded (unfunded) status of ABO |
|
|
|
4,002,000,000
|
3,257,000,000
|
| Provision for future salaries |
|
|
|
0
|
0
|
| Projected benefit obligation |
14,982,000,000
|
14,461,000,000
|
14,461,000,000
|
$ 15,706,000,000
|
$ 14,982,000,000
|
| Weighted-average assumptions, December 31 |
|
|
|
|
|
| Discount rate |
|
|
|
3.68%
|
4.16%
|
| U.S. | Nonqualified | Other Pension Plan |
|
|
|
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Fair value, January 1 |
2,744,000,000
|
2,805,000,000
|
|
|
|
| Actual return on plan assets |
128,000,000
|
74,000,000
|
|
|
|
| Company contributions |
98,000,000
|
104,000,000
|
|
|
|
| Plan participant contributions |
0
|
0
|
|
|
|
| Settlements and curtailments |
0
|
(6,000,000)
|
|
|
|
| Benefits paid |
(246,000,000)
|
(233,000,000)
|
|
|
|
| Fair value, December 31 |
2,724,000,000
|
2,744,000,000
|
2,805,000,000
|
|
|
| Change in projected benefit obligation |
|
|
|
|
|
| Projected benefit obligation, January 1 |
3,047,000,000
|
3,053,000,000
|
|
|
|
| Service cost |
1,000,000
|
0
|
0
|
|
|
| Interest cost |
117,000,000
|
127,000,000
|
122,000,000
|
|
|
| Plan participant contributions |
0
|
0
|
|
|
|
| Plan amendments |
0
|
0
|
|
|
|
| Settlements and curtailments |
0
|
(6,000,000)
|
|
|
|
| Actuarial loss (gain) |
128,000,000
|
106,000,000
|
|
|
|
| Benefits paid |
(246,000,000)
|
(233,000,000)
|
|
|
|
| Projected benefit obligation, December 31 |
3,047,000,000
|
3,047,000,000
|
3,053,000,000
|
|
|
| Amounts recognized on Consolidated Balance Sheet |
|
|
|
|
|
| Other assets |
|
|
|
$ 730,000,000
|
$ 760,000,000
|
| Accrued expenses and other liabilities |
|
|
|
(1,053,000,000)
|
(1,063,000,000)
|
| Net amount recognized, December 31 |
|
|
|
(323,000,000)
|
(303,000,000)
|
| Funded status, December 31 |
|
|
|
|
|
| Accumulated benefit obligation |
|
|
|
3,046,000,000
|
3,046,000,000
|
| Overfunded (unfunded) status of ABO |
|
|
|
(322,000,000)
|
(302,000,000)
|
| Provision for future salaries |
|
|
|
1,000,000
|
1,000,000
|
| Projected benefit obligation |
3,047,000,000
|
3,053,000,000
|
3,053,000,000
|
$ 3,047,000,000
|
$ 3,047,000,000
|
| Weighted-average assumptions, December 31 |
|
|
|
|
|
| Discount rate |
|
|
|
3.58%
|
4.01%
|
| Rate of compensation increase |
|
|
|
4.00%
|
4.00%
|
| Non-U.S. | Pension Plan |
|
|
|
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Fair value, January 1 |
2,789,000,000
|
2,738,000,000
|
|
|
|
| Actual return on plan assets |
118,000,000
|
541,000,000
|
|
|
|
| Company contributions |
23,000,000
|
48,000,000
|
|
|
|
| Plan participant contributions |
1,000,000
|
1,000,000
|
|
|
|
| Settlements and curtailments |
(190,000,000)
|
(20,000,000)
|
|
|
|
| Benefits paid |
(54,000,000)
|
(118,000,000)
|
|
|
|
| Foreign currency exchange rate changes |
256,000,000
|
(401,000,000)
|
|
|
|
| Fair value, December 31 |
2,943,000,000
|
2,789,000,000
|
2,738,000,000
|
|
|
| Change in projected benefit obligation |
|
|
|
|
|
| Projected benefit obligation, January 1 |
2,763,000,000
|
2,580,000,000
|
|
|
|
| Service cost |
24,000,000
|
25,000,000
|
27,000,000
|
|
|
| Interest cost |
72,000,000
|
86,000,000
|
93,000,000
|
|
|
| Plan participant contributions |
1,000,000
|
1,000,000
|
|
|
|
| Plan amendments |
0
|
0
|
|
|
|
| Settlements and curtailments |
(200,000,000)
|
(31,000,000)
|
|
|
|
| Actuarial loss (gain) |
(26,000,000)
|
535,000,000
|
|
|
|
| Benefits paid |
(54,000,000)
|
(118,000,000)
|
|
|
|
| Foreign currency exchange rate changes |
234,000,000
|
(315,000,000)
|
|
|
|
| Projected benefit obligation, December 31 |
2,814,000,000
|
2,763,000,000
|
2,580,000,000
|
|
|
| Amounts recognized on Consolidated Balance Sheet |
|
|
|
|
|
| Other assets |
|
|
|
$ 610,000,000
|
$ 475,000,000
|
| Accrued expenses and other liabilities |
|
|
|
(481,000,000)
|
(449,000,000)
|
| Net amount recognized, December 31 |
|
|
|
129,000,000
|
26,000,000
|
| Funded status, December 31 |
|
|
|
|
|
| Accumulated benefit obligation |
|
|
|
2,731,000,000
|
2,645,000,000
|
| Overfunded (unfunded) status of ABO |
|
|
|
212,000,000
|
144,000,000
|
| Provision for future salaries |
|
|
|
83,000,000
|
118,000,000
|
| Projected benefit obligation |
$ 2,763,000,000
|
$ 2,580,000,000
|
$ 2,580,000,000
|
$ 2,814,000,000
|
$ 2,763,000,000
|
| Weighted-average assumptions, December 31 |
|
|
|
|
|
| Discount rate |
|
|
|
2.39%
|
2.56%
|
| Rate of compensation increase |
|
|
|
4.31%
|
4.51%
|