Long-lived Assets (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Schedule of PP&E

The details of our property and equipment and the related accumulated depreciation are set forth below:

	Estimated useful life at December 31, 2022	December 31,
		2022		2021
		in millions
Distribution systems	3 to 30 years	$	9,134.3	$	9,472.8
Support equipment, buildings and land	3 to 33 years	4,067.2		4,310.5
Customer premises equipment	4 to 7 years	1,338.1		1,279.2
Total property and equipment, gross		14,539.6		15,062.5
Accumulated depreciation		(8,035.1)		(8,081.0)
Total property and equipment, net		$	6,504.5	$	6,981.5

Schedule of Changes in Carrying Amount of Goodwill

Changes in the carrying amount of our goodwill during 2022 are set forth below:

	January 1, 2022		Acquisitions and related adjustments		Foreign currency translation adjustments and other		December 31, 2022
	in millions
Switzerland	$	6,590.5	$	—	$	(75.4)	$	6,515.1
Belgium	2,591.8		39.0		(150.6)		2,480.2
Ireland	275.9		—		(16.4)		259.5
Central and Other	65.2		—		(3.9)		61.3
Total	$	9,523.4	$	39.0	$	(246.3)	$	9,316.1

Changes in the carrying amount of our goodwill during 2021 are set forth below:

	January 1, 2021		Acquisitions and related adjustments		Foreign currency translation adjustments and other		December 31, 2021
	in millions
Switzerland	$	6,816.0	$	18.6	$	(244.1)	$	6,590.5
Belgium	2,783.7		(0.8)		(191.1)		2,591.8
Ireland	296.2		—		(20.3)		275.9
Central and Other	69.8		—		(4.6)		65.2
Total	$	9,965.7	$	17.8	$	(460.1)	$	9,523.4

Schedule of Intangible Assets Subject to Amortization, Net

The details of our intangible assets subject to amortization are set forth below: 

	Estimated useful life at December 31, 2022	December 31, 2022						December 31, 2021
		Gross carrying amount		Accumulated amortization		Net carrying amount		Gross carrying amount		Accumulated amortization		Net carrying amount
		in millions
Customer relationships	5 to 11 years	$	2,289.9	$	(932.2)	$	1,357.7	$	2,336.2	$	(602.2)	$	1,734.0
Other	2 to 20 years	1,467.2		(482.5)		984.7		1,034.3		(425.8)		608.5
Total		$	3,757.1	$	(1,414.7)	$	2,342.4	$	3,370.5	$	(1,028.0)	$	2,342.5

Schedule of Amortization Expense Related to Intangible Assets with Finite Lives

Based on our amortizable intangible asset balance at December 31, 2022, we expect that amortization expense will be as follows for the next five years and thereafter (in millions):  

2023	$	444.3
2024	436.4
2025	433.6
2026	386.2
2027	86.8
Thereafter	555.1
Total	$	2,342.4