Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 367,902	$ 277,042
Unrestricted short-term investments	30,759	39,550
Cash and cash equivalents	398,661	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	5,356	4,423
Restricted short-term investments	45,341	75,203
Securities available for sale	2,343,429	2,577,901
Restricted investment in bank stocks	150,749	152,434
Loans and leases, net of deferred costs and fees	13,005,013	12,728,082
Loans held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	152,749	166,659
Less: Allowance for loan and lease losses	178,594	184,020
Net loans and leases	12,979,168	12,710,721
Premises and equipment, net	187,826	188,983
Other real estate and foreclosed assets	19,319	31,017
Accrued interest receivable	42,665	40,304
Bank-owned life insurance	451,278	450,270
Goodwill	1,275,439	1,270,359
Intangible assets with finite lives	35,737	41,332
Deferred income tax assets	7,999	4,685
Other assets	140,072	173,443
Total Assets	18,083,039	18,037,667
Deposits [Abstract]
Noninterest-bearing	1,931,874	1,973,664
Interest-bearing	10,832,358	10,606,382
Total deposits	12,764,232	12,580,046
Federal Home Loan Bank short-term borrowings	1,070,000	1,098,000
Other short-term borrowings	706,065	817,577
Federal Home Loan Bank long-term borrowings	91,995	101,062
Other long-term debt	250,231	251,021
Junior subordinated debentures	154,964	154,927
Long-term debt of consolidated variable interest entities for which creditors do not have recourse to Susquehanna's general credit	83,807	107,453
Accrued interest, taxes, and expenses payable	78,211	81,808
Deferred income tax liabilities	31,694	14,475
Other liabilities	206,900	235,389
Total Liabilities	15,438,099	15,441,758
Shareholders' equity:
Common stock, $2.00 par value, 400,000,000 shares authorized; Issued: 187,283,197 at June 30, 2013, and 186,811,642 at December 31, 2012	374,566	373,623
Treasury stock, at cost. 259,699 at June 30, 2013, and 257,556 at December 31, 2012	(1,875)	(1,850)
Additional paid-in capital	1,649,636	1,645,958
Retained earnings	688,535	615,436
Accumulated other comprehensive loss, net of taxes of $36,698 and $20,672, respectively	(65,922)	(37,258)
Total Shareholders' Equity	2,644,940	2,595,909
Total Liabilities and Shareholders' Equity	$ 18,083,039	$ 18,037,667