Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2020

Intangible Assets, Net [Abstract]

Gross and Net Carrying Amounts for each Major Class of Intangible Assets

	As of December 31, 2020						As of December 31, 2019
	Gross carrying		Accumulated		Net book		Gross carrying		Accumulated		Net book
	amount		amortization		value		amount		amortization		value
	(in thousands)
Current contract intangibles	$	4,876,880	$	(2,471,438)	$	2,405,442	$	4,996,591	$	(2,218,404)	$	2,778,187
Network location intangibles		1,770,944		(1,020,236)		750,708		1,764,484		(915,898)		848,586
Intangible assets, net	$	6,647,824	$	(3,491,674)	$	3,156,150	$	6,761,075	$	(3,134,302)	$	3,626,773

Estimated Future Amortization Expense

For the year ended December 31,	(in thousands)
2021	$	410,820
2022		388,376
2023		364,625
2024		335,645
2025		325,820