|
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
6 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Statement of Comprehensive Income [Abstract] |
|
|
|
|
| Net income |
$ 1,550 |
$ 1,598 |
$ 3,119 |
$ 3,005 |
| Investment securities, available-for-sale: |
|
|
|
|
| Net unrealized (loss) gain |
(9) |
11 |
(19) |
28 |
| Income tax effect |
4 |
(4) |
7 |
(10) |
| Reclassification adjustment for net gain realized in net income |
0 |
0 |
(21) |
0 |
| Income tax effect |
0 |
0 |
8 |
0 |
| Defined benefit pension and other postretirement plans: |
|
|
|
|
| Net unrealized actuarial loss and prior service credit |
(6) |
(8) |
0 |
(7) |
| Income tax effect |
1 |
3 |
0 |
3 |
| Amortization of actuarial gain (loss) and prior service credit realized in net income |
1 |
(5) |
0 |
(7) |
| Income tax effect |
0 |
2 |
0 |
3 |
| Derivative instruments classified as cash flow hedges: |
|
|
|
|
| Net unrealized gain (loss) |
65 |
(7) |
128 |
17 |
| Income tax effect |
(20) |
1 |
(37) |
(3) |
| Reclassification adjustment for net gain realized in net income |
(20) |
(12) |
(26) |
(23) |
| Income tax effect |
5 |
2 |
7 |
4 |
| Foreign currency translation adjustments |
0 |
0 |
1 |
0 |
| Other comprehensive income (loss), net of tax |
21 |
(17) |
48 |
5 |
| Comprehensive income |
$ 1,571 |
$ 1,581 |
$ 3,167 |
$ 3,010 |