|
Accumulated Other Comprehensive Income (Schedule of Changes in Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Accumulated other comprehensive income (loss), balance at beginning of period, net of tax |
$ (138) |
|
$ (68) |
|
| Net change in accumulated other comprehensive income (loss), net of tax |
(23) |
|
(2) |
|
| Accumulated other comprehensive income (loss), balance at end of period, net of tax |
(161) |
|
(70) |
|
| Unrealized Gain (Loss) on Available-for-Sale Investment Securities, Net of Tax [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Accumulated other comprehensive income (loss), balance at beginning of period, net of tax |
23 |
|
19 |
|
| Net change in accumulated other comprehensive income (loss), net of tax |
0 |
|
2 |
|
| Accumulated other comprehensive income (loss), balance at end of period, net of tax |
23 |
|
21 |
|
| Gain (Loss) on Cash Flow Hedges, Net of Tax [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Accumulated other comprehensive income (loss), balance at beginning of period, net of tax |
(7) |
|
13 |
|
| Net change in accumulated other comprehensive income (loss), net of tax |
(23) |
|
(4) |
|
| Accumulated other comprehensive income (loss), balance at end of period, net of tax |
(30) |
|
9 |
|
| Foreign Currency Translation Adjustments, Net of Tax [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Accumulated other comprehensive income (loss), balance at beginning of period, net of tax |
0 |
[1] |
1 |
[1] |
| Net change in accumulated other comprehensive income (loss), net of tax |
0 |
[1] |
0 |
[1] |
| Accumulated other comprehensive income (loss), balance at end of period, net of tax |
0 |
[1] |
1 |
[1] |
| Pension Plan Gain (Loss), Net of Tax [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Accumulated other comprehensive income (loss), balance at beginning of period, net of tax |
(154) |
|
(101) |
|
| Net change in accumulated other comprehensive income (loss), net of tax |
0 |
|
0 |
|
| Accumulated other comprehensive income (loss), balance at end of period, net of tax |
$ (154) |
|
$ (101) |
|
|
|
|