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v3.26.1

Revenue - Spectrum Lease Agreements (Details) $ in Millions | 12 Months Ended | 29 Months Ended | 42 Months Ended | 55 Months Ended | 64 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2026 USD ($) | Mar. 31, 2026 USD ($) | Mar. 31, 2026 USD ($) | Mar. 31, 2026 USD ($) | Mar. 31, 2026 USD ($) | Nov. 30, 2023 USD ($) term | Oct. 31, 2022 USD ($) term | Sep. 30, 2021 USD ($) term | Dec. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag | true |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Lease extension | 3 years | 3 years | 3 years | 3 years | 3 years |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Lease extension | 10 years | 10 years | 10 years | 10 years | 10 years |  |  |  |
Ameren Corporation |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Initial Term | 30 years | 30 years | 30 years | 30 years | 30 years |  |  |  | 30 years
Lease extension |  |  |  |  |  |  |  |  | 10 years
Total Consideration | $ 16.3 | $ 16.3 | $ 16.3 | $ 16.3 | $ 16.3 |  |  |  | $ 47.7
Payments Received |  |  |  |  | 31.4 |  |  |  |
Evergy |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Initial Term |  |  |  |  |  |  |  | 20 years |
Lease extension |  |  |  |  |  |  |  | 10 years |
Total Consideration | $ 0.0 | $ 0.0 | $ 0.0 | 0.0 | $ 0.0 |  |  | $ 30.2 |
Payments Received |  |  |  | $ 30.2 |  |  |  |  |
Lessor, Operating Lease, Renewal Term, Number | term |  |  |  |  |  |  |  | 2 |
Xcel Energy |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Initial Term | 20 years | 20 years | 20 years | 20 years | 20 years |  | 20 years |  |
Lease extension |  |  |  |  |  |  | 10 years |  |
Total Consideration | $ 4.0 | $ 4.0 | $ 4.0 | $ 4.0 | $ 4.0 |  | $ 80.0 |  |
Payments Received |  |  | 76.0 |  |  |  |  |  |
Lessor, Operating Lease, Renewal Term, Number | term |  |  |  |  |  |  | 2 |  |
Tampa Electric Company |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Initial Term |  |  |  |  |  | 20 years |  |  |
Lease extension |  |  |  |  |  | 10 years |  |  |
Total Consideration | $ 0.0 | 0.0 | $ 0.0 | $ 0.0 | $ 0.0 | $ 34.5 |  |  |
Payments Received |  | $ 34.5 |  |  |  |  |  |  |
Lessor, Operating Lease, Renewal Term, Number | term |  |  |  |  |  | 2 |  |  |

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