Income Taxes (Tables)

3 Months Ended

Mar. 31, 2023

Income Tax Disclosure [Abstract]

Differences Between Statutory Income Tax Rate And Effective Income Tax Rate

The differences between the 21% statutory federal income tax rate and our effective income tax rate were as follows:

(Dollars in millions)	Three months ended March 31,
	2023				2022
Tax at statutory rate:	$	56	21.0	%	$	(74)	21.0	%
Increase (decrease) resulting from:
Tax-exempt income from municipal bonds	(5)		(1.9)		(5)		1.4
Dividend received exclusion	(5)		(1.9)		(5)		1.4
Other	(3)		(1.2)		(1)		0.4
Provision (benefit) for income taxes	$	43	16.0	%	$	(85)	24.2	%