Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest income:
Interest and fees on loans	$ 574,712	$ 561,083
Interest on investment securities available for sale	54,878	46,197
Interest on investment securities held to maturity	6,639	6,795
Interest on federal funds sold, securities purchased under agreements to resell and interest bearing deposits	9,262	4,366
Interest on trading account assets	10,297	14,321
Total interest income	655,788	632,762
Interest expense:
Interest on deposits	70,304	77,815
Interest on FHLB and other borrowings	19,068	18,012
Interest on federal funds purchased and securities sold under agreements to repurchase	4,897	6,157
Interest on other short-term borrowings	10,086	13,896
Total interest expense	104,355	115,880
Net interest income	551,433	516,882
Provision for loan losses	80,139	113,245
Net interest income after provision for loan losses	471,294	403,637
Noninterest income:
Service charges on deposit accounts	55,168	51,425
Card and merchant processing fees	29,992	29,742
Investment banking and advisory fees	28,301	23,604
Retail investment sales	27,471	22,567
Money transfer income	25,197	24,425
Asset management fees	9,771	8,805
Corporate and correspondent investment sales	8,915	4,413
Mortgage banking	2,870	(3,434)
Bank owned life insurance	4,169	4,416
Investment securities gains, net	0	8,353
Other	52,833	78,889
Total noninterest income	244,687	253,205
Noninterest expense:
Salaries, benefits and commissions	268,015	279,769
Equipment	61,630	60,441
Professional services	57,807	56,367
Net occupancy	42,101	39,272
Money transfer expense	16,324	15,600
Amortization of intangibles	2,525	4,093
Securities impairment:
Other-than-temporary impairment	242	0
Less: non-credit portion recognized in other comprehensive income	0	0
Securities impairment	242	0
Other	100,668	136,602
Total noninterest expense	549,312	592,144
Net income before income tax expense	166,669	64,698
Income tax expense	45,846	25,431
Net income	120,823	39,267
Less: net income attributable to noncontrolling interests	443	528
Net income attributable to BBVA Compass Bancshares, Inc.	120,380	38,739
Less: preferred stock dividends	3,548	3,219
Net income attributable to common shareholder	$ 116,832	$ 35,520