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Leases (Notes) | 12 Months Ended
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Dec. 31, 2021
Leases [Abstract] |
Leases [Text Block] | Leases Lessor Tenant Leases See note 3 for further information regarding the contractual amounts owed to the Company pursuant to tenant contracts in effect as of December 31, 2021 and other information. Lessee Operating Leases The components of the Company's operating lease expense are as follows:
| Years Ended December 31,
| 2021 |  | 2020 |  | 2019
Lease cost: |  |  |  |  |
Operating lease expense(a) | $ | 646 |  |  | $ | 640 |  |  | $ | 632 |
Variable lease expense(b) | 164 |  |  | 153 |  |  | 149 |
Total lease expense(c) | $ | 810 |  |  | $ | 793 |  |  | $ | 781 |
(a)Represents the Company's operating lease expense related to its ROU assets for the twelve months ended December 31, 2021, 2020 and 2019. (b)Represents the Company's expense related to contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) for the twelve months ended December 31, 2021, 2020 and 2019. Such contingencies are recognized as expense in the period they are resolved. (c)Excludes those direct operating expenses accounted for pursuant to accounting guidance outside the scope of ASC 842. Lessee Finance Leases The vast majority of the Company's finance leases are related to the towers subject to prepaid master lease agreements with AT&T and T-Mobile, including agreements assumed by T-Mobile in connection with its merger with Sprint, and are recorded as "Property and equipment, net" on the consolidated balance sheet. See note 1 for further discussion of the Company's prepaid master lease agreements. Finance leases and associated leasehold improvements related to gross property and equipment and accumulated depreciation were $4.3 billion and $2.5 billion, respectively, as of December 31, 2021. Finance leases and associated leasehold improvements related to gross property and equipment and accumulated depreciation were $4.4 billion and $2.3 billion, respectively, as of December 31, 2020. For the twelve months ended December 31, 2021 and 2020, the Company recorded $200 million and $211 million, respectively, to "Depreciation, amortization and accretion" related to finance leases. Other Lessee Information As of December 31, 2021, the Company's weighted-average remaining lease term and weighted-average discount rate for operating leases were 16 years and 3.4%, respectively. The following table is a summary of the Company's maturities of operating lease liabilities as of December 31, 2021:
| Years Ending December 31, |  |  |  |  |  |  |  |
| 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | Thereafter |  | Total undiscounted lease payments |  | Less: Imputed interest |  | Total operating lease liabilities
Operating leases(a) | $ | 556 |  |  | $ | 553 |  |  | $ | 545 |  |  | $ | 530 |  |  | $ | 520 |  |  | $ | 5,749 |  |  | $ | 8,453 |  |  | $ | (2,073) |  |  | $ | 6,380 |
(a)Excludes the Company's contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) as such arrangements are excluded from the Company's operating lease liability. Such contingencies are recognized as expense in the period they are resolved.

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- Definition This disclosure represents the Company’s Lease footnote (operating and financing leases) + References No definition available. + Details
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Namespace Prefix: | cci_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration