Income Taxes (Tables)

3 Months Ended

Mar. 31, 2022

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,
	2022				2021
Tax at statutory rate:	$	(76)	21.0	%	$	161	21.0	%
Increase (decrease) resulting from:
Tax-exempt income from municipal bonds	(5)		1.4		(5)		(0.7)
Dividend received exclusion	(5)		1.4		(5)		(0.7)
Other	(1)		0.4		(3)		(0.3)
Provision (benefit) for income taxes	$	(87)	24.2	%	$	148	19.3	%