Offsetting Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2017

Offsetting Assets and Liabilities [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

	March 31, 2017					December 31, 2016
(In millions)	Carrying value		Estimated fair value		Level	Carrying value		Estimated fair value		Level
Financial assets:
HTM investment securities	$	815	$	803	2	$	868	$	850	2
Loans and leases (including loans held for sale), net of allowance	42,326		42,038		3	42,254		42,111		3
Financial liabilities:
Time deposits	2,994		2,977		2	2,757		2,744		2
Other short-term borrowings	2,500		2,500		2	500		500		2
Long-term debt	383		404		2	535		552		2

	March 31, 2017
(In millions)								Gross amounts not offset in the balance sheet
Description	Gross amounts recognized		Gross amounts offset in the balance sheet			Net amounts presented in the balance sheet		Financial instruments			Cash collateral received/pledged			Net amount
Assets:
Federal funds sold and security resell agreements	$	757	$	(394	)	$	363	$	—		$	—		$	363
Derivatives (included in other assets)	55		—			55		(17		)	—			38
	$	812	$	(394	)	$	418	$	(17	)	$	—		$	401
Liabilities:
Federal funds and other short-term borrowings	$	3,531	$	(394	)	$	3,137	$	—		$	—		$	3,137
Derivatives (included in other liabilities)	56		—			56		(17		)	(14		)	25
	$	3,587	$	(394	)	$	3,193	$	(17	)	$	(14	)	$	3,162

	December 31, 2016
(In millions)							Gross amounts not offset in the balance sheet
Description	Gross amounts recognized		Gross amounts offset in the balance sheet		Net amounts presented in the balance sheet		Financial instruments			Cash collateral received/pledged			Net amount
Assets:
Federal funds sold and security resell agreements	$	568	$	—	$	568	$	—		$	—		$	568
Derivatives (included in other assets)	64		—		64		(17		)	—			47
	$	632	$	—	$	632	$	(17	)	$	—		$	615
Liabilities:
Federal funds and other short-term borrowings	$	827	$	—	$	827	$	—		$	—		$	827
Derivatives (included in other liabilities)	59		—		59		(17		)	(17		)	25
	$	886	$	—	$	886	$	(17	)	$	(17	)	$	852