Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
INTEREST INCOME
Interest and fees on loans	$ 111,496	$ 108,018	$ 222,198	$ 215,804
Interest and fees on loans held for sale	0	91	0	176
Interest on investment securities	53,016	53,233	98,035	98,192
Interest on short-term federal funds sold and securities purchased under agreements to resell	24	28	50	37
Interest on long-term securities purchased under agreements to resell	2,943	5,810	7,094	11,639
Interest on deposits with banks	88	75	188	152
Total interest income	167,567	167,255	327,565	326,000
INTEREST EXPENSE
Savings, interest checking and money market	3,358	3,375	6,664	7,299
Time open and C.D.'s of less than $100,000	1,063	1,656	2,183	3,405
Time open and C.D.'s of $100,000 and over	1,515	1,667	2,967	3,366
Interest on federal funds purchased and securities sold under agreements to repurchase	263	270	466	488
Interest on other borrowings	875	829	1,726	1,641
Total interest expense	7,074	7,797	14,006	16,199
Net interest income	160,493	159,458	313,559	309,801
Provision for loan losses	7,555	7,379	17,215	10,664
Net interest income after provision for loan losses	152,938	152,079	296,344	299,137
NON-INTEREST INCOME
Bank card transaction fees	44,444	40,700	86,161	79,250
Trust fees	27,765	25,734	54,338	50,903
Deposit account charges and other fees	19,709	19,602	38,299	38,314
Capital market fees	3,246	3,305	7,116	7,696
Consumer brokerage services	2,972	2,853	5,719	5,539
Loan fees and sales	1,211	1,314	2,420	2,787
Other	9,416	9,168	17,337	18,064
Total non-interest income	108,763	102,676	211,390	202,553
INVESTMENT SECURITIES GAINS (LOSSES), NET
Impairment (losses) reversals on debt securities	(785)	(293)	(848)	1,096
Noncredit-related losses (reversals) on securities not expected to be sold	154	(195)	(129)	(2,026)
Net impairment gains (losses)	(631)	(488)	(977)	(930)
Realized gains (losses) on sales and fair value adjustments	(1,927)	(1,080)	8,456	(2,803)
Investment securities gains, net	(2,558)	(1,568)	7,479	(3,733)
NON-INTEREST EXPENSE
Salaries and employee benefits	94,849	89,569	189,112	180,450
Net occupancy	11,151	11,234	22,767	22,469
Equipment	4,525	4,680	9,029	9,363
Supplies and communication	5,486	5,797	11,185	11,386
Data processing and software	19,578	19,584	38,665	38,535
Marketing	3,949	4,048	7,630	7,407
Deposit insurance	2,892	2,790	5,786	5,557
Other	20,501	19,264	41,097	36,836
Total non-interest expense	162,931	156,966	325,271	312,003
Income before income taxes	96,212	96,221	189,942	185,954
Less income taxes	30,312	30,182	59,921	59,107
Net income	65,900	66,039	130,021	126,847
Less non-controlling interest expense	(631)	234	(823)	25
Net income attributable to Commerce Bancshares, Inc.	66,531	65,805	130,844	126,822
Preferred Stock Dividends, Income Statement Impact	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic	$ 66,531	$ 65,805	$ 130,844	$ 126,822
Net income per common share - basic	$ 0.70	$ 0.69	$ 1.37	$ 1.33
Net income per common share - diluted	$ 0.70	$ 0.69	$ 1.37	$ 1.32