Joint Ventures (Details) - Forecast - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended | 24 Months Ended | |
|---|---|---|---|---|
Mar. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2028 |
Jul. 01, 2025 |
|
| Lumos | ||||
| Joint Venture [Line Items] | ||||
| Expected investment to acquire interest in joint venture | $ 950 | $ 500 | ||
| Ownership interest in joint venture (percent) | 50.00% | |||
| Metronet | ||||
| Joint Venture [Line Items] | ||||
| Expected investment to acquire interest in joint venture | $ 4,900 | |||
| Ownership interest in joint venture (percent) | 50.00% |