Supplementary Unrestricted Subsidiary Information - Schedule of Consolidating Statement of Income (Loss) of Such Unrestricted Subsidiaries (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues and sales:
Revenues	$ 722.6	$ 292.2	$ 1,317.3	$ 873.6
Costs and expenses:
Selling, general and administrative	121.2	26.7	177.4	80.5
Depreciation and amortization	202.3	79.3	361.7	234.9
Gain on sale of operating assets	0.0	0.0	0.0	(19.0)
Transaction related and other costs	157.7	14.4	179.0	31.1
Total costs and expenses	765.2	154.9	1,069.2	434.2
Operating income	(42.6)	137.3	248.1	439.4
Other expense, net	(0.2)	0.0	(1.3)	0.3
Gain on settlement of preexisting relationships	1,685.4	0.0	1,685.4	0.0
Interest expense, net	(168.2)	(131.0)	(467.0)	(381.7)
Income before income taxes	1,474.4	6.3	1,465.2	58.0
Income tax benefit	134.5	5.9	145.2	13.8
Net income	1,608.9	12.2	1,610.4	71.8
Service revenues
Revenues and sales:
Revenues	695.3	287.5	1,282.0	861.1
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)	261.4	32.8	323.7	98.5
Sales revenues
Revenues and sales:
Revenues	27.3	4.7	35.3	12.5
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)	$ 22.6	$ 1.7	27.4	8.2
Eliminations
Revenues and sales:
Revenues			(47.5)	(10.0)
Costs and expenses:
Selling, general and administrative			(8.3)	(10.0)
Depreciation and amortization			0.0	0.0
Gain on sale of operating assets			0.0	0.0
Transaction related and other costs			0.0	0.0
Total costs and expenses			(47.5)	(10.0)
Operating income			0.0	0.0
Other expense, net			0.0	0.0
Gain on settlement of preexisting relationships			0.0
Interest expense, net			0.0	0.0
Income before income taxes			0.0	0.0
Income tax benefit			0.0	0.0
Net income			0.0	0.0
Eliminations | Service revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			(39.2)	0.0
Eliminations | Sales revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			0.0	0.0
Consolidated
Revenues and sales:
Revenues			1,317.3	873.6
Costs and expenses:
Selling, general and administrative			177.4	80.5
Depreciation and amortization			361.7	234.9
Gain on sale of operating assets			0.0	(19.0)
Transaction related and other costs			179.0	31.1
Total costs and expenses			1,069.2	434.2
Operating income			248.1	439.4
Other expense, net			(1.3)	0.3
Gain on settlement of preexisting relationships			1,685.4
Interest expense, net			(467.0)	(381.7)
Income before income taxes			1,465.2	58.0
Income tax benefit			145.2	13.8
Net income			1,610.4	71.8
Consolidated | Service revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			323.7	98.5
Consolidated | Sales revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			27.4	8.2
Unrestricted Subsidiaries
Revenues and sales:
Revenues			104.3	46.8
Costs and expenses:
Selling, general and administrative			9.8	23.6
Depreciation and amortization			17.5	12.1
Gain on sale of operating assets			0.0	0.0
Transaction related and other costs			0.0	0.0
Total costs and expenses			65.8	35.7
Operating income			38.5	11.1
Other expense, net			0.0	0.0
Gain on settlement of preexisting relationships			0.2
Interest expense, net			(32.6)	(17.0)
Income before income taxes			6.1	(5.9)
Income tax benefit			0.0	0.0
Net income			6.1	(5.9)
Unrestricted Subsidiaries | Service revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			38.5	0.0
Unrestricted Subsidiaries | Sales revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			0.0	0.0
Restricted Subsidiaries
Revenues and sales:
Revenues			1,260.5	836.8
Costs and expenses:
Selling, general and administrative			175.9	66.9
Depreciation and amortization			344.2	222.8
Gain on sale of operating assets			0.0	(19.0)
Transaction related and other costs			179.0	31.1
Total costs and expenses			1,050.9	408.5
Operating income			209.6	428.3
Other expense, net			(1.3)	0.3
Gain on settlement of preexisting relationships			1,685.2
Interest expense, net			(434.4)	(364.7)
Income before income taxes			1,459.1	63.9
Income tax benefit			145.2	13.8
Net income			1,604.3	77.7
Restricted Subsidiaries | Service revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			324.4	98.5
Restricted Subsidiaries | Sales revenues
Costs and expenses:
Cost of services and sales (exclusive of depreciation and amortization included below)			$ 27.4	$ 8.2