XML 18 R40.htm IDEA: XBRL DOCUMENT
v3.20.1

NATURE OF OPERATIONS (Details) | 3 Months Ended
--- | ---
Mar. 29, 2020 location country
Nature of Operations |
Company Owned and Independent Distributor Locations Number | 600
Dealer Locations Number | 7,600
Countries and Territories Number | country | 190

X
- Definition The number of company-owned and independent distributor locations through which the entity serves its customers. + References No definition available. + Details
Name: | cmi_CompanyOwnedAndIndependentDistributorLocationsNumber
Namespace Prefix: | cmi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of countries and territories through which the entity serves its customers. + References No definition available. + Details
Name: | cmi_CountriesAndTerritoriesNumber
Namespace Prefix: | cmi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of dealer locations through which the entity serves its customers. + References No definition available. + Details
Name: | cmi_DealerLocationsNumber
Namespace Prefix: | cmi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | cmi_NatureOfOperationsAbstract
Namespace Prefix: | cmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration