Income Taxes (Tables)

3 Months Ended

Mar. 31, 2012

Differences Between 35 Percent Statutory Income Tax Rate and Effective Income Tax Rate

The differences between the 35 percent statutory income tax rate and our effective income tax rate were as follows:

(Dollars in millions)	Three months ended March 31,
	2012					2011
Tax at statutory rate	$	39		35.0	%	$	26		35.0	%
Increase (decrease) resulting from:
Tax-exempt income from municipal bonds		(8	)	(7.6	)		(9	)	(11.6	)
Dividend received exclusion		(6	)	(4.8	)		(5	)	(6.8	)
Other		1		0.6			2		2.1
Provision for income taxes	$	26		23.2	%	$	14		18.7	%