Allowance for credit losses (Tables)

12 Months Ended

Dec. 31, 2015

Changes in the allowance for credit losses for the years ended December 31, 2015, 2014 and 2013 were as follows:


	Commercial, Financial, Leasing, etc.			Real Estate
2015	Commercial, Financial, Leasing, etc.			Commercial			Residential			Consumer			Unallocated		Total
	(In thousands)
Beginning balance	$	288,038		$	307,927		$	61,910		$	186,033		$	75,654	$	919,562
Provision for credit losses		43,065			25,768			19,133			79,489			2,545		170,000
Net charge-offs
Charge-offs		(60,983	)		(16,487	)		(13,116	)		(107,787	)		—		(198,373	)
Recoveries		30,284			9,623			4,311			20,585			—		64,803

Net charge-offs		(30,699	)		(6,864	)		(8,805	)		(87,202	)		—		(133,570	)

Ending balance	$	300,404		$	326,831		$	72,238		$	178,320		$	78,199	$	955,992

2014
Beginning balance	$	273,383		$	324,978		$	78,656		$	164,644		$	75,015	$	916,676
Provision for credit losses		51,410			(13,779	)		(3,974	)		89,704			639		124,000
Net charge-offs
Charge-offs		(58,943	)		(14,058	)		(21,351	)		(84,390	)		—		(178,742	)
Recoveries		22,188			10,786			8,579			16,075			—		57,628

Net charge-offs		(36,755	)		(3,272	)		(12,772	)		(68,315	)		—		(121,114	)

Ending balance	$	288,038		$	307,927		$	61,910		$	186,033		$	75,654	$	919,562

2013
Beginning balance	$	246,759		$	337,101		$	88,807		$	179,418		$	73,775	$	925,860
Provision for credit losses		124,180			275			3,149			56,156			1,240		185,000
Allowance related to loans sold or securitized		—			—			—			(11,000	)		—		(11,000	)
Net charge-offs
Charge-offs		(109,329	)		(34,595	)		(23,621	)		(85,965	)		—		(253,510	)
Recoveries		11,773			22,197			10,321			26,035			—		70,326

Net charge-offs		(97,556	)		(12,398	)		(13,300	)		(59,930	)		—		(183,184	)

Ending Balance	$	273,383		$	324,978		$	78,656		$	164,644		$	75,015	$	916,676

Impaired Loans and Leases

The following tables provide information with respect to loans and leases that were considered impaired as of December 31, 2015 and 2014 and for the years ended December 31, 2015, 2014 and 2013.


	December 31, 2015						December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
With an allowance recorded:
Commercial, financial, leasing, etc.	$	179,037	$	195,821	$	44,752	$	132,340	$	165,146	$	31,779
Real estate:
Commercial		85,974		95,855		18,764		83,955		96,209		14,121
Residential builder and developer		3,316		5,101		196		17,632		22,044		805
Other commercial construction		3,548		3,843		348		5,480		6,484		900
Residential		79,558		96,751		4,727		88,970		107,343		4,296
Residential-limited documentation		90,356		104,251		8,000		101,137		114,565		11,000
Consumer:
Home equity lines and loans		25,220		26,195		3,777		19,771		20,806		6,213
Automobile		22,525		22,525		4,709		30,317		30,317		8,070
Other		17,620		17,620		4,820		18,973		18,973		5,459

		507,154		567,962		90,093		498,575		581,887		82,643

With no related allowance recorded:
Commercial, financial, leasing, etc.		93,190		110,735		—		73,978		81,493		—
Real estate:
Commercial		101,340		116,230		—		66,777		78,943		—
Residential builder and developer		27,651		47,246		—		58,820		96,722		—
Other commercial construction		13,221		31,477		—		20,738		41,035		—
Residential		19,621		30,940		—		16,815		26,750		—
Residential-limited documentation		18,414		31,113		—		26,752		46,964		—

		273,437		367,741		—		263,880		371,907		—

Total:
Commercial, financial, leasing, etc.		272,227		306,556		44,752		206,318		246,639		31,779
Real estate:
Commercial		187,314		212,085		18,764		150,732		175,152		14,121
Residential builder and developer		30,967		52,347		196		76,452		118,766		805
Other commercial construction		16,769		35,320		348		26,218		47,519		900
Residential		99,179		127,691		4,727		105,785		134,093		4,296
Residential-limited documentation		108,770		135,364		8,000		127,889		161,529		11,000
Consumer:
Home equity lines and loans		25,220		26,195		3,777		19,771		20,806		6,213
Automobile		22,525		22,525		4,709		30,317		30,317		8,070
Other		17,620		17,620		4,820		18,973		18,973		5,459

Total	$	780,591	$	935,703	$	90,093	$	762,455	$	953,794	$	82,643

Interest Income Recognized on Impaired Loans


	Year Ended December 31, 2015						Year Ended December 31, 2014
	Average Recorded Investment		Interest Income Recognized				Average Recorded Investment		Interest Income Recognized
	Average Recorded Investment		Total		Cash Basis		Average Recorded Investment		Total		Cash Basis
	(In thousands)
Commercial, financial, leasing, etc.	$	236,201	$	2,933	$	2,933	$	181,932	$	2,251	$	2,251
Real estate:
Commercial		166,628		6,243		6,243		184,773		4,029		4,029
Residential builder and developer		59,457		335		335		91,149		142		142
Other commercial construction		20,276		2,311		2,311		62,734		1,893		1,893
Residential		101,483		6,188		4,037		126,005		9,180		6,978
Residential-limited documentation		118,449		6,380		2,638		133,800		6,613		2,546
Consumer:
Home equity lines and loans		21,523		905		261		18,083		750		248
Automobile		25,675		1,619		175		35,173		2,251		295
Other		18,809		729		113		18,378		690		191

Total	$	768,501	$	27,643	$	19,046	$	852,027	$	27,799	$	18,573


	Year Ended December 31, 2013
			Interest Income Recognized
	Average Recorded Investment		Total		Cash Basis
	(In thousands)
Commercial, financial, leasing, etc.	$	155,188	$	7,197	$	7,197
Real estate:
Commercial		197,533		4,852		4,852
Residential builder and developer		147,288		1,043		796
Other commercial construction		96,475		5,248		5,248
Residential		183,059		6,203		4,111
Residential-limited documentation		149,461		6,784		2,341
Consumer:
Home equity lines and loans		12,811		683		183
Automobile		44,116		2,916		515
Other		15,710		634		208

Total	$	1,001,641	$	35,560	$	25,451

Summary of Loan Grades

The following table summarizes the loan grades applied to the various classes of the Company’s commercial loans and commercial real estate loans.


			Real Estate
	Commercial, Financial, Leasing, etc		Commercial		Residential Builder and Developer		Other Commercial Construction
	(In thousands)
December 31, 2015
Pass	$	19,442,183	$	23,098,856	$	1,497,465	$	3,432,679
Criticized accrual		738,238		787,480		59,779		96,654
Criticized nonaccrual		241,917		179,606		28,429		16,363

Total	$	20,422,338	$	24,065,942	$	1,585,673	$	3,545,696

December 31, 2014
Pass	$	18,695,440	$	21,837,022	$	1,347,778	$	3,347,522
Criticized accrual		588,407		578,317		45,845		172,269
Criticized nonaccrual		177,445		141,600		71,517		25,699

Total	$	19,461,292	$	22,556,939	$	1,465,140	$	3,545,490

Allocation of Allowance for Credit Losses on Basis of Company's Impairment Methodology

The allocation of the allowance for credit losses summarized on the basis of the Company’s impairment methodology was as follows:


	Commercial, Financial, Leasing, etc.		Real Estate
	Commercial, Financial, Leasing, etc.		Commercial		Residential		Consumer		Total
	(In thousands)
December 31, 2015
Individually evaluated for impairment	$	44,752	$	19,175	$	12,727	$	13,306	$	89,960
Collectively evaluated for impairment		255,615		307,000		57,624		163,511		783,750
Purchased impaired		37		656		1,887		1,503		4,083

Allocated	$	300,404	$	326,831	$	72,238	$	178,320		877,793

Unallocated										78,199

Total									$	955,992

December 31, 2014
Individually evaluated for impairment	$	31,779	$	15,490	$	14,703	$	19,742	$	81,714
Collectively evaluated for impairment		251,607		291,244		45,061		165,140		753,052
Purchased impaired		4,652		1,193		2,146		1,151		9,142

Allocated	$	288,038	$	307,927	$	61,910	$	186,033		843,908

Unallocated										75,654

Total									$	919,562

Recorded Investment in Loans and Leases on Basis of Company's Impairment Methodology

The recorded investment in loans and leases summarized on the basis of the Company’s impairment methodology was as follows:


	Commercial, Financial, Leasing, etc.		Real Estate
	Commercial, Financial, Leasing, etc.		Commercial		Residential		Consumer		Total
	(In thousands)
December 31, 2015
Individually evaluated for impairment	$	272,227	$	234,132	$	207,949	$	65,365	$	779,673
Collectively evaluated for impairment		20,148,209		28,863,130		25,398,037		11,532,121		85,941,497
Purchased impaired		1,902		100,049		664,117		2,261		768,329

Total	$	20,422,338	$	29,197,311	$	26,270,103	$	11,599,747	$	87,489,499

December 31, 2014
Individually evaluated for impairment	$	206,318	$	252,347	$	232,398	$	69,061	$	760,124
Collectively evaluated for impairment		19,244,674		27,148,382		8,406,680		10,911,359		65,711,095
Purchased impaired		10,300		166,840		18,223		2,374		197,737

Total	$	19,461,292	$	27,567,569	$	8,657,301	$	10,982,794	$	66,668,956