AOCI

3 Months Ended

Mar. 31, 2018

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

AOCI

AOCI

The following table summarizes activity in AOCI:

(Dollars in millions)	Unrecognized Net Pension and Postretirement Costs			Unrealized Net Gains (Losses) on Cash Flow Hedges			Unrealized Net Gains (Losses) on AFS Securities			Other, net			Total
AOCI balance, January 1, 2017	$	(764	)	$	(92	)	$	(259	)	$	(17	)	$	(1,132	)
OCI before reclassifications, net of tax	(2		)	3			(1		)	1			1
Amounts reclassified from AOCI:
Before tax	17			(8		)	(1		)	1			9
Tax effect	6			(3		)	—			—			3
Amounts reclassified, net of tax	11			(5		)	(1		)	1			6
Total OCI, net of tax	9			(2		)	(2		)	2			7
AOCI balance, March 31, 2017	$	(755	)	$	(94	)	$	(261	)	$	(15	)	$	(1,125	)
AOCI balance, January 1, 2018	$	(1,004	)	$	(92	)	$	(356	)	$	(15	)	$	(1,467	)
OCI before reclassifications, net of tax	—			70			(282		)	(2		)	(214		)
Amounts reclassified from AOCI:
Before tax	18			11			19			—			48
Tax effect	4			3			5			—			12
Amounts reclassified, net of tax	14			8			14			—			36
Total OCI, net of tax	14			78			(268		)	(2		)	(178		)
AOCI balance, March 31, 2018	$	(990	)	$	(14	)	$	(624	)	$	(17	)	$	(1,645	)
Primary income statement location of amounts reclassified from AOCI	Other expense			Net interest income			Net interest income			Net interest income