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v3.22.2.2

Investments in Affiliates and Other Entities (Details) mile in Thousands, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2020 mile | Dec. 01, 2022 USD ($) | Dec. 31, 2021 USD ($) | Oct. 31, 2021
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  | $ 135.4 |  |  | $ 135.4 |  |  | $ 101.2 |
Length of electric transmission and distribution system | mile |  |  |  |  |  | 18 |  |  |
Investment balance |  | 27.8 |  |  | 27.8 |  |  | 130.2 |
Investment in real estate |  | 26.3 |  | $ 23.5 | 26.3 |  |  |  |
LUMA Energy, LLC |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Term of operation and maintenance agreement |  |  |  |  |  | 15 years |  |  |
LUMA Energy, LLC | Forecast |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Fee due in the event of expiration of service agreement |  |  |  |  |  |  | $ 115.0 |  |
Integral Affiliates |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  | 82.2 |  |  | 82.2 |  |  | 67.8 |
Due from related parties |  | 83.0 |  |  | 83.0 |  |  | 49.0 |
Due to related parties |  | 23.2 |  |  | 23.2 |  |  | 56.3 |
Revenue from related parties |  | 38.2 |  |  | 89.7 |  |  |  |
Related party cost of sales |  | 38.8 |  |  | 111.1 |  |  |  |
LUMA Energy, LLC |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  | $ 40.3 |  |  | $ 40.3 |  |  | 30.6 |
Equity interest |  | 50.00% |  |  | 50.00% |  |  |  |
Integral Affiliate Offering Right-of-way Solutions |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  | $ 27.0 |  |  | $ 27.0 |  |  | 28.5 |
Equity interest |  |  |  |  |  |  |  |  | 44.00%
Non-Integral Unconsolidated Affiliates |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  | 53.2 |  |  | 53.2 |  |  | $ 33.4 |
Broadband Technology Provider |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Preferred non-controlling interest |  |  |  | $ 90.0 |  |  |  |  |
Starry Group Holdings, Inc. |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Equity security fair value |  | 15.0 |  |  | 15.0 |  |  |  |
Payments to acquire equity securities | $ 1.5 |  |  |  |  |  |  |  |
Decrease in fair value |  | $ (26.5) |  |  | $ (76.5) |  |  |  |
Technology Incubation Company |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Cost method investments, gain on sale |  |  | $ 6.7 |  |  |  |  |  |
Cost method investments, gain on sale, after tax |  |  | $ 5.0 |  |  |  |  |  |

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