|
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), January 1, |
$ (936) |
|
| Shareholders' other comprehensive income (loss) |
2 |
88 |
| Accumulated other comprehensive income (loss), March 31, |
(934) |
|
| Realized investment (gains) losses |
(73) |
(42) |
| Other operating expenses |
2,204 |
1,980 |
| Accumulated Net Unrealized Investment Gain (Loss) [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Accumulated other comprehensive income (loss), before tax, January 1, |
955 |
733 |
| Other comprehensive income (loss) before reclassifications, pre-tax |
148 |
156 |
| Reclassification adjustment, pre-tax |
(20) |
(25) |
| Other comprehensive income (loss), pre-tax |
128 |
131 |
| Accumulated other comprehensive income (loss), before tax, March 31, |
1,083 |
864 |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, January 1, |
(335) |
(256) |
| Other comprehensive income (loss), securities, before reclassifications, tax (expense) benefit |
(47) |
(54) |
| Reclassification adjustment, securities, tax (expense) benefit |
7 |
9 |
| Other comprehensive income (loss), tax (expense) benefit |
(40) |
(45) |
| Other comprehensive income (loss) before reclassifications, after-tax |
101 |
102 |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, March 31, |
(375) |
(301) |
| Accumulated other comprehensive income (loss), January 1, |
620 |
477 |
| Reclassification adjustment, after-tax |
(13) |
(16) |
| Shareholders' other comprehensive income (loss) |
88 |
86 |
| Accumulated other comprehensive income (loss), March 31, |
708 |
563 |
| Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Realized investment (gains) losses |
(20) |
(25) |
| Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Accumulated other comprehensive income (loss), before tax, January 1, |
(12) |
(29) |
| Other comprehensive income (loss), pre-tax |
10 |
0 |
| Accumulated other comprehensive income (loss), before tax, March 31, |
(2) |
(29) |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, January 1, |
4 |
10 |
| Other comprehensive income (loss), tax (expense) benefit |
(3) |
0 |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, March 31, |
1 |
10 |
| Accumulated other comprehensive income (loss), January 1, |
(8) |
(19) |
| Shareholders' other comprehensive income (loss) |
7 |
0 |
| Accumulated other comprehensive income (loss), March 31, |
(1) |
(19) |
| Accumulated Translation Adjustment [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Accumulated other comprehensive income (loss), before tax, January 1, |
(71) |
91 |
| Other comprehensive income (loss), pre-tax |
(109) |
(13) |
| Accumulated other comprehensive income (loss), before tax, March 31, |
(180) |
78 |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, January 1, |
9 |
(9) |
| Other comprehensive income (loss), tax (expense) benefit |
5 |
2 |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, March 31, |
14 |
(7) |
| Accumulated other comprehensive income (loss), January 1, |
(62) |
82 |
| Shareholders' other comprehensive income (loss) |
(104) |
(11) |
| Accumulated other comprehensive income (loss), March 31, |
(166) |
71 |
| Accumulated Defined Benefit Plans Adjustment Net Prior Service Cost Credit [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Reclassification adjustment, pre-tax |
16 |
13 |
| Reclassification adjustment, postretirement benefits, tax (expense) benefit |
(5) |
(5) |
| Reclassification adjustment, after-tax |
11 |
8 |
| Accumulated Defined Benefit Plans Adjustment Net Prior Service Cost Credit [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Other operating expenses |
16 |
13 |
| Accumulated Defined Benefit Plans Adjustment Settlement [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Reclassification adjustment, pre-tax |
|
6 |
| Reclassification adjustment, postretirement benefits, tax (expense) benefit |
|
(2) |
| Reclassification adjustment, after-tax |
|
4 |
| Accumulated Defined Benefit Plans Adjustment Settlement [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Other operating expenses |
|
6 |
| Accumulated Defined Benefit Plans Adjustment [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Accumulated other comprehensive income (loss), before tax, January 1, |
(2,286) |
(1,630) |
| Reclassification adjustment, pre-tax |
16 |
19 |
| Accumulated other comprehensive income (loss), before tax, March 31, |
(2,270) |
(1,611) |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, January 1, |
800 |
570 |
| Reclassification adjustment, postretirement benefits, tax (expense) benefit |
(5) |
(7) |
| Accumulated Other Comprehensive Income/Loss Tax (Expense) Benefit, March 31, |
795 |
563 |
| Accumulated other comprehensive income (loss), January 1, |
(1,486) |
(1,060) |
| Reclassification adjustment, after-tax |
11 |
12 |
| Accumulated other comprehensive income (loss), March 31, |
(1,475) |
(1,048) |
| Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] |
|
|
| Accumulated Other Comprehensive Income Loss [Line Items] |
|
|
| Other operating expenses |
$ 16 |
$ 19 |