Leases - Schedule of Underlying Assets under Operating Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	$ 8,037,580	$ 7,978,363
Less: accumulated depreciation	(5,433,927)	(5,391,479)
Underlying assets under operating leases, net	2,603,653	2,586,884
Land
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	26,580	26,593
Building and Improvements
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	343,934	343,624
Poles
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	285,474	281,130
Fiber
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	3,317,265	3,278,276
Equipment
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	428	428
Copper
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	3,933,940	3,918,281
Conduit
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	89,859	89,859
Tower Assets
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	1,397	1,397
Finance Lease Assets
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	28,126	28,126
Other Assets
Lessor Lease Description [Line Items]
Underlying assets under operating leases, gross	$ 10,577	$ 10,649