AOCI

6 Months Ended

Jun. 30, 2020

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

AOCI

AOCI

AOCI includes the after-tax change in unrecognized net costs related to defined benefit pension and OPEB plans as well as unrealized gains and losses on cash flow hedges and AFS securities.

Three Months Ended June 30, 2020 and 2019 (Dollars in millions)	Pension and OPEB Costs		Cash Flow Hedges		AFS Securities		Other, net		Total
AOCI balance, April 1, 2019	$	(1,147)	$	(65)	$	(191)	$	(18)	$	(1,421)
OCI before reclassifications, net of tax	—		(61)		346		—		285
Amounts reclassified from AOCI:
Before tax	24		2		(6)		—		20
Tax effect	5		—		(2)		—		3
Amounts reclassified, net of tax	19		2		(4)		—		17
Total OCI, net of tax	19		(59)		342		—		302
AOCI balance, June 30, 2019	$	(1,128)	$	(124)	$	151	$	(18)	$	(1,119)
AOCI balance, April 1, 2020	$	(1,107)	$	(90)	$	2,101	$	(6)	$	898
OCI before reclassifications, net of tax	(1)		—		101		3		103
Amounts reclassified from AOCI:
Before tax	20		14		(237)		—		(203)
Tax effect	5		3		(57)		—		(49)
Amounts reclassified, net of tax	15		11		(180)		—		(154)
Total OCI, net of tax	14		11		(79)		3		(51)
AOCI balance, June 30, 2020	$	(1,093)	$	(79)	$	2,022	$	(3)	$	847
Six Months Ended June 30, 2020 and 2019 (Dollars in millions)	Pension and OPEB Costs		Cash Flow Hedges		AFS Securities		Other, net		Total
AOCI balance, January 1, 2019	$	(1,164)	$	(31)	$	(500)	$	(20)	$	(1,715)
OCI before reclassifications, net of tax	—		(91)		660		2		571
Amounts reclassified from AOCI:
Before tax	47		(3)		(12)		—		32
Tax effect	11		(1)		(3)		—		7
Amounts reclassified, net of tax	36		(2)		(9)		—		25
Total OCI, net of tax	36		(93)		651		2		596
AOCI balance, June 30, 2019	$	(1,128)	$	(124)	$	151	$	(18)	$	(1,119)
AOCI balance, January 1, 2020	$	(1,122)	$	(101)	$	380	$	(1)	$	(844)
OCI before reclassifications, net of tax	(1)		—		1,791		(2)		1,788
Amounts reclassified from AOCI:
Before tax	40		29		(196)		—		(127)
Tax effect	10		7		(47)		—		(30)
Amounts reclassified, net of tax	30		22		(149)		—		(97)
Total OCI, net of tax	29		22		1,642		(2)		1,691
AOCI balance, June 30, 2020	$	(1,093)	$	(79)	$	2,022	$	(3)	$	847
Primary income statement location of amounts reclassified from AOCI	Other expense		Net interest income		Securities gains (losses) and Net interest income		Net interest income