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Leases (Tables) | 12 Months Ended
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Dec. 31, 2023
Leases [Abstract] |
Lease, Cost [Table Text Block] | The components of the Company's operating lease expense are as follows:
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Lease cost: |  |  |  |  |
Operating lease expense(a) | $ | 708 |  |  | $ | 660 |  |  | $ | 646 |
Variable lease expense(b) | 205 |  |  | 175 |  |  | 164 |
Total lease expense(c) | $ | 913 |  |  | $ | 835 |  |  | $ | 810 |
(a)Represents the Company's operating lease expense related to its ROU assets for the years ended December 31, 2023, 2022 and 2021. (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 years ended December 31, 2023, 2022 and 2021. 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, Operating Lease, Liability, Maturity [Table Text Block] | The following table is a summary of the Company's maturities of operating lease liabilities as of December 31, 2023:
| Years Ending December 31, |  | Thereafter |  | Total undiscounted lease payments |  | Less: Imputed interest |  | Total operating lease liabilities
| 2024 |  | 2025 |  | 2026 |  | 2027 |  | 2028 |  |  |  |
Operating leases(a) | $ | 570 |  |  | $ | 557 |  |  | $ | 548 |  |  | $ | 542 |  |  | $ | 540 |  |  | $ | 5,472 |  |  | $ | 8,229 |  |  | $ | (2,336) |  |  | $ | 5,893 |
(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 Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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