Income Taxes (Tables)

6 Months Ended

Jun. 30, 2020

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 June 30,								Six months ended June 30,
	2020				2019				2020				2019
Tax at statutory rate:	$	240	21.0	%	$	111	21.0	%	$	(91)	21.0	%	$	293	21.0	%
Increase (decrease) resulting from:
Tax-exempt income from municipal bonds	(5)		(0.4)		(4)		(0.8)		(10)		2.3		(9)		(0.6)
Dividend received exclusion	(4)		(0.3)		(4)		(0.8)		(8)		1.9		(8)		(0.6)
Other	5		0.3		(1)		(0.2)		(5)		1.3		(2)		(0.2)
Provision (benefit) for income taxes	$	236	20.6	%	$	102	19.2	%	$	(114)	26.5	%	$	274	19.6	%