Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Loans	$ 9,247,971	$ 9,177,478
Allowance for loan losses	(181,532)	(184,532)
Net loans	9,066,439	8,992,946
Loans held for sale	9,673	31,076
Investment securities:
Available for sale ($420,085,000 and $418,046,000 pledged in 2012 and 2011, respectively, to secure structured repurchase agreements)	9,120,399	9,224,702
Trading	34,178	17,853
Non-marketable	120,734	115,832
Total investment securities	9,275,311	9,358,387
Short-term federal funds sold and securities purchased under agreements to resell	40,925	11,870
Long-term securities purchased under agreements to resell	850,000	850,000
Interest earning deposits with banks	12,038	39,853
Cash and due from banks	381,462	465,828
Land, buildings and equipment, net	353,866	360,146
Goodwill	125,585	125,585
Other intangible assets, net	7,070	7,714
Other assets	404,548	405,962
Total assets	20,526,917	20,649,367
LIABILITIES AND EQUITY
Non-interest bearing	5,209,381	5,377,549
Savings, interest checking and money market	9,038,283	8,933,941
Time open and C.D.'s of less than $100,000	1,143,687	1,166,104
Time open and C.D.'s of $100,000 and over	1,380,409	1,322,289
Total deposits	16,771,760	16,799,883
Federal funds purchased and securities sold under agreements to repurchase	1,122,988	1,256,081
Other borrowings	111,520	111,817
Other liabilities	321,443	311,225
Total liabilities	18,327,711	18,479,006
Commerce Bancshares, Inc. stockholders' equity:
Preferred stock, $1 par value Authorized and unissued 2,000,000 shares
Common stock, $5 par value Authorized 100,000,000 shares; issued 89,277,398 shares in 2012 and 2011	446,387	446,387
Capital surplus	1,032,985	1,042,065
Retained earnings	620,780	575,419
Treasury stock of 587,906 shares in 2012 and 217,755 shares in 2011, at cost	(22,872)	(8,362)
Accumulated other comprehensive income	118,056	110,538
Total Commerce Bancshares, Inc. stockholders' equity	2,195,336	2,166,047
Non-controlling interest	3,870	4,314
Total equity	2,199,206	2,170,361
Total liabilities and equity	$ 20,526,917	$ 20,649,367