Cash and Money Market Investments Cash and Money Market Investments (Tables)

6 Months Ended

Jun. 30, 2013

Gross and net information for selected financial instruments [Abstract]

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

	December 31, 2012
(In thousands)								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	$	3,675,354	$	(900,000	)	$	2,775,354	$	—		$	—		$	2,775,354
Derivatives (included in other assets)	81,810		—			81,810		(409		)	—			81,401
	$	3,757,164	$	(900,000	)	$	2,857,164	$	(409	)	$	—		$	2,856,755
Liabilities:
Federal funds purchased and security repurchase agreements	$	1,220,478	$	(900,000	)	$	320,478	$	—		$	—		$	320,478
Derivatives (included in other liabilities)	89,100		—			89,100		(409		)	(81,683		)	7,008
	$	1,309,578	$	(900,000	)	$	409,578	$	(409	)	$	(81,683	)	$	327,486

	June 30, 2013
(In thousands)								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	$	771,799	$	(550,000	)	$	221,799	$	—		$	—		$	221,799
Derivatives (included in other assets)	59,457		—			59,457		(8,389		)	(1,803		)	49,265
	$	831,256	$	(550,000	)	$	281,256	$	(8,389	)	$	(1,803	)	$	271,064
Liabilities:
Federal funds purchased and security repurchase agreements	$	790,816	$	(550,000	)	$	240,816	$	—		$	—		$	240,816
Derivatives (included in other liabilities)	64,862		—			64,862		(8,389		)	(41,059		)	15,414
	$	855,678	$	(550,000	)	$	305,678	$	(8,389	)	$	(41,059	)	$	256,230

	June 30, 2013				December 31, 2012
(In thousands)	Carrying value		Estimated fair value		Carrying value		Estimated fair value
Financial assets:
HTM investment securities	$	783,371	$	734,292	$	756,909	$	674,741
Loans and leases (including loans held for sale), net of allowance	37,538,652		37,419,383		37,020,811		37,024,198
Financial liabilities:
Time deposits	2,810,431		2,825,093		2,962,931		2,988,714
Foreign deposits	1,514,270		1,513,920		1,804,060		1,803,625
Other short-term borrowings	—		—		5,409		5,421
Long-term debt (less fair value hedges)	2,166,932		2,405,548		2,329,323		2,636,422