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Commitments and Contingencies Commitment and Contingencies (Details)	Sep. 30, 2024
Subject to Capital Lease with TMO or AT&T [Member]
Other Commitments [Line Items]
Purchase Option, Percentage of Towers	53.00%

X

- Definition

Purchase Option, Percentage of Towers

+ References

No definition available.

+ Details

Name:	cci_PurchaseOptionPercentageofTowers
Namespace Prefix:	cci_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	cci_ContractualTermsAxis=cci_SubjectToCapitalLeaseWithTMOOrATTMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: