Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 377,730	$ 277,042
Unrestricted short-term investments	30,663	39,550
Cash and cash equivalents	408,393	316,592
Interest-bearing deposits held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	2,138	4,423
Restricted short-term investments	44,928	75,203
Available-for-sale securities	2,483,375	2,577,901
Restricted investment in bank stocks	160,787	152,434
Loans and leases, net of deferred costs and fees	13,300,309	12,728,082
Loans held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	76,145	166,659
Less: Allowance for loan and lease losses	166,740	184,020
Net loans and leases	13,209,714	12,710,721
Premises and equipment, net	189,096	188,983
Other real estate and foreclosed assets	18,729	31,017
Accrued interest receivable	41,715	40,304
Bank-owned life insurance	449,419	450,270
Goodwill	1,275,439	1,270,359
Intangible assets with finite lives	33,666	41,332
Deferred income tax assets	7,921	4,685
Other assets	155,830	173,443
Total Assets	18,481,150	18,037,667
Deposits [Abstract]
Noninterest-bearing	1,871,461	1,973,664
Interest-bearing	10,850,224	10,606,382
Total deposits	12,721,685	12,580,046
Federal Home Loan Bank short-term borrowings	1,510,000	1,098,000
Other short-term borrowings	688,456	817,577
Federal Home Loan Bank long-term borrowings	83,272	101,062
Other long-term debt	250,229	251,021
Junior subordinated debentures	154,983	154,927
Long-term debt of consolidated variable interest entities for which creditors do not have recourse to Susquehanna's general credit	52,592	107,453
Accrued interest, taxes, and expenses payable	101,040	81,808
Deferred income tax liabilities	52,214	14,475
Other liabilities	187,331	235,389
Total Liabilities	15,801,802	15,441,758
Shareholders' Equity
Common stock, $2.00 par value, 400,000,000 shares authorized; Issued: 187,491,129 at September 30, 2013, and 186,811,642 at December 31, 2012	374,982	373,623
Treasury stock, at cost. 265,858 at September 30, 2013, and 257,556 at December 31, 2012	(1,918)	(1,850)
Additional paid-in capital	1,651,382	1,645,958
Retained earnings	717,850	615,436
Accumulated other comprehensive loss, net of taxes of $34,983 and $20,672, respectively	(62,948)	(37,258)
Total Shareholders' Equity	2,679,348	2,595,909
Total Liabilities and Shareholders' Equity	$ 18,481,150	$ 18,037,667