Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2012

Accumulated Other Comprehensive Loss Table [Abstract]

Changes in accumulated other comprehensive income (loss)

			Tax
			(Expense)		After-
(In millions)	Pre-Tax		Benefit		Tax
2012
Net unrealized appreciation, securities:
Net unrealized appreciation on securities arising during the year	$	271	$	(90)	$	181
Reclassification adjustment for losses (gains) included in shareholders' net income		(52)		18		(34)
Net unrealized appreciation, securities	$	219	$	(72)	$	147
Net unrealized depreciation, derivatives	$	(7)	$	2	$	(5)
Net translation of foreign currencies	$	78	$	(12)	$	66
Postretirement benefits liability adjustment:
Reclassification adjustment for amortization of net losses from past experience
and prior service costs, and settlement charges	$	52	$	(18)	$	34
Net change arising from assumption and plan changes and experience		(181)		55		(126)
Net postretirement benefits liability adjustment	$	(129)	$	37	$	(92)

			Tax
			(Expense)		After-
(In millions)	Pre-Tax		Benefit		Tax
2011
Net unrealized appreciation, securities:
Net unrealized appreciation on securities arising during the year	$	366	$	(127)	$	239
Reclassification adjustment for (gains) included in net income		(49)		18		(31)
Net unrealized appreciation, securities	$	317	$	(109)	$	208
Net unrealized appreciation, derivatives	$	1	$	-	$	1
Net translation of foreign currencies	$	(21)	$	(1)	$	(22)
Postretirement benefits liability adjustment:
Reclassification adjustment for amortization of net losses from past experience
and prior service costs	$	22	$	(7)	$	15
Net change arising from assumption and plan changes and experience		(580)		205		(375)
Net postretirement benefits liability adjustment	$	(558)	$	198	$	(360)

			Tax
			(Expense)		After-
(In millions)	Pre-Tax		Benefit		Tax
2010
Net unrealized appreciation, securities:
Net unrealized appreciation on securities arising during the year	$	319	$	(109)	$	210
Reclassification adjustment for (gains) included in net income		(92)		32		(60)
Net unrealized appreciation, securities	$	227	$	(77)	$	150
Net unrealized appreciation derivatives	$	8	$	(2)	$	6
Net translation of foreign currencies	$	40	$	(7)	$	33
Postretirement benefits liability adjustment:
Reclassification adjustment for amortization of net losses from past experience
and prior service costs	$	10	$	(4)	$	6
Net change arising from assumption and plan changes and experience		(311)		116		(195)
Net postretirement benefits liability adjustment	$	(301)	$	112	$	(189)