Cover Page - shares
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6 Months Ended |
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Jun. 30, 2021 |
Aug. 09, 2021 |
| Cover [Abstract] |
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| Document Type |
10-Q
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| Document Quarterly Report |
true
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| Document Period End Date |
Jun. 30, 2021
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| Document Transition Report |
false
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| Entity File Number |
001-31921
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| Entity Registrant Name |
Compass Minerals International, Inc.
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| Entity Incorporation, State or Country Code |
DE
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| Entity Tax Identification Number |
36-3972986
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| Entity Address, Address Line One |
9900 West 109th Street
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| Entity Address, Address Line Two |
Suite 100
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| Entity Address, City or Town |
Overland Park
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| Entity Address, State or Province |
KS
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| Entity Address, Postal Zip Code |
66210
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| City Area Code |
913
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| Local Phone Number |
344-9200
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| Title of 12(b) Security |
Common stock, $0.01 par value
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| Trading Symbol |
CMP
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| Security Exchange Name |
NYSE
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| Entity Current Reporting Status |
Yes
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| Entity Interactive Data Current |
Yes
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| Entity Filer Category |
Large Accelerated Filer
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| Entity Small Business |
false
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| Entity Emerging Growth Company |
false
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| Entity Shell Company |
false
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| Entity Common Stock, Shares Outstanding |
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34,038,721
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| Entity Central Index Key |
0001227654
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| Current Fiscal Year End Date |
--09-30
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| Document Fiscal Year Focus |
2021
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| Document Fiscal Period Focus |
Q2
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| Amendment Flag |
false
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