Loan Sales And Securitizations (Narrative) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010
Single-family residential mortgage loans transferred	$ 54,400,000		$ 178,900,000		$ 192,600,000		$ 353,800,000
Net pre-tax gains on sale of residential mortgage loan	300,000		1,500,000		1,200,000		3,000,000
Percentage of single-family mortgage loans received as fees	0.29%
Percentage of income related to excess income	0.34%
Percentage of HELOC and home equity lonas received as fees	0.50%		0.50%
Loans, net of unearned income	16,061,646,000	[1],[2]	17,154,050,000	[1],[2]	16,061,646,000	[1],[2]	17,154,050,000	[1],[2]	16,782,572,000
Trading securities	1,196,380,000		1,806,789,000		1,196,380,000		1,806,789,000		769,750,000
Term borrowings	2,502,517,000		2,926,675,000		2,502,517,000		2,926,675,000		3,228,070,000
FTBNA [Member]
Loans, net of unearned income	112,500,000		112,500,000		112,500,000		112,500,000
Trading securities	1,700,000		1,700,000		1,700,000		1,700,000
Term borrowings	$ 51,800,000		$ 50,700,000		$ 51,800,000		$ 50,700,000

[1] Q2 2011 and Q2 2010 include $29.9 million and $43.0 million of reserves, respectively, and $649.2 million and $770.3 million of balances in restricted consumer real estate loans, respectively.

[2] Q2 2011 and Q2 2010 include $3.1 million and $7.1 million of reserves, respectively, and $44.9 million and $63.5 million of balances in restricted permanent mortgage loans, respectively.