AOCI (Tables)

6 Months Ended

Jun. 30, 2016

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

Schedule of Changes in AOCI

Three Months Ended June 30, 2016	Unrecognized Net Pension and Postretirement Costs			Unrealized Net Gains (Losses) on Cash Flow Hedges			Unrealized Net Gains (Losses) on AFS Securities			FDIC's Share of Unrealized (Gains) Losses on AFS Securities			Other, net			Total
	(Dollars in millions)
AOCI balance, April 1, 2016	$	(712	)	$	(198	)	$	163		$	(154	)	$	(16	)	$	(917	)
OCI before reclassifications, net of tax	1			(51		)	110			6			1			67
Amounts reclassified from AOCI:
Personnel expense	16			—			—			—			—			16
Interest income	—			—			(16		)	—			—			(16		)
Interest expense	—			4			—			—			—			4
FDIC loss share income, net	—			—			—			17			—			17
Securities (gains) losses, net	—			—			—			—			—			—
Total before income taxes	16			4			(16		)	17			—			21
Less: Income taxes	6			2			(6		)	6			—			8
Net of income taxes	10			2			(10		)	11			—			13
Net change in AOCI	11			(49		)	100			17			1			80
AOCI balance, June 30, 2016	$	(701	)	$	(247	)	$	263		$	(137	)	$	(15	)	$	(837	)

Three Months Ended June 30, 2015	Unrecognized Net Pension and Postretirement Costs			Unrealized Net Gains (Losses) on Cash Flow Hedges			Unrealized Net Gains (Losses) on AFS Securities			FDIC's Share of Unrealized (Gains) Losses on AFS Securities			Other, net			Total
	(Dollars in millions)
AOCI balance, April 1, 2015	$	(617	)	$	(108	)	$	209		$	(197	)	$	(20	)	$	(733	)
OCI before reclassifications, net of tax	1			60			(121		)	5			1			(54		)
Amounts reclassified from AOCI:
Personnel expense	12			—			—			—			—			12
Interest income	—			—			22			—			—			22
Interest expense	—			21			—			—			—			21
FDIC loss share income, net	—			—			—			6			—			6
Securities (gains) losses, net	—			—			1			—			—			1
Total before income taxes	12			21			23			6			—			62
Less: Income taxes	4			8			9			2			—			23
Net of income taxes	8			13			14			4			—			39
Net change in AOCI	9			73			(107		)	9			1			(15		)
AOCI balance, June 30, 2015	$	(608	)	$	(35	)	$	102		$	(188	)	$	(19	)	$	(748	)

Six Months Ended June 30, 2016	Unrecognized Net Pension and Postretirement Costs			Unrealized Net Gains (Losses) on Cash Flow Hedges			Unrealized Net Gains (Losses) on AFS Securities			FDIC's Share of Unrealized (Gains) Losses on AFS Securities			Other, net			Total
	(Dollars in millions)
AOCI balance, January 1, 2016	$	(723	)	$	(83	)	$	(34	)	$	(169	)	$	(19	)	$	(1,028	)
OCI before reclassifications, net of tax	1			(177		)	352			11			3			190
Amounts reclassified from AOCI:
Personnel expense	33			—			—			—			—			33
Interest income	—			—			(43		)	—			1			(42		)
Interest expense	—			21			—			—			—			21
FDIC loss share income, net	—			—			—			33			—			33
Securities (gains) losses, net	—			—			(45		)	—			—			(45		)
Total before income taxes	33			21			(88		)	33			1			—
Less: Income taxes	12			8			(33		)	12			—			(1		)
Net of income taxes	21			13			(55		)	21			1			1
Net change in AOCI	22			(164		)	297			32			4			191
AOCI balance, June 30, 2016	$	(701	)	$	(247	)	$	263		$	(137	)	$	(15	)	$	(837	)

Six Months Ended June 30, 2015	Unrecognized Net Pension and Postretirement Costs			Unrealized Net Gains (Losses) on Cash Flow Hedges			Unrealized Net Gains (Losses) on AFS Securities			FDIC's Share of Unrealized (Gains) Losses on AFS Securities			Other, net			Total
	(Dollars in millions)
AOCI balance, January 1, 2015	$	(626	)	$	(54	)	$	152		$	(207	)	$	(16	)	$	(751	)
OCI before reclassifications, net of tax	3			(7		)	(54		)	7			(4		)	(55		)
Amounts reclassified from AOCI:
Personnel expense	24			—			—			—			—			24
Interest income	—			—			6			—			1			7
Interest expense	—			42			—			—			—			42
FDIC loss share income, net	—			—			—			19			—			19
Securities (gains) losses, net	—			—			1			—			—			1
Total before income taxes	24			42			7			19			1			93
Less: Income taxes	9			16			3			7			—			35
Net of income taxes	15			26			4			12			1			58
Net change in AOCI	18			19			(50		)	19			(3		)	3
AOCI balance, June 30, 2015	$	(608	)	$	(35	)	$	102		$	(188	)	$	(19	)	$	(748	)