Shareholders Equity and Dividend Restrictions (Tables)

12 Months Ended

Dec. 31, 2012

Shareholders Equity And Dividend Restrictions Tables [Abstract]

Schedule of statutory net income and surplus

(In millions)	2012		2011		2010
Net income	$	1,520	$	953	$	1,697
Surplus	$	6,109	$	5,286	$	5,107