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Discontinued Operations - Income (Loss) From Discontinued Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Discontinued Operations, Held-for-sale        
Revenue:        
Revenue $ 0 $ 110,825 $ 213,329 $ 334,710
Operating expenses        
Selling, general and administrative 0 7,696 17,514 25,931
Severance expense 0 0 465 0
Depreciation and amortization 0 15,077 0 62,804
Total operating expenses 0 60,940 68,087 215,542
Operating income 0 49,885 145,242 119,168
Other (expense) income:        
Debt extinguishment (11,032) 0 (11,032) 0
Interest expense and other, net (733) (4,508) (9,434) (15,477)
Income before income taxes 1,213,050 45,377 1,349,591 103,691
Income tax expense 326,724 11,868 363,227 27,269
Income from discontinued operations, net of tax 886,326 33,509 986,364 76,422
Discontinued Operations, Held-for-sale | Service revenue and other        
Revenue:        
Revenue 0 100,963 201,076 302,488
Discontinued Operations, Held-for-sale | Equipment revenue        
Revenue:        
Revenue 0 9,862 12,253 32,222
Discontinued Operations, Held-for-sale | Cost of services        
Operating expenses        
Cost of services and cost of goods sold 0 28,567 38,144 95,242
Discontinued Operations, Held-for-sale | Cost of goods sold        
Operating expenses        
Cost of services and cost of goods sold 0 9,600 11,964 31,565
Discontinued Operations, Disposed of by Sale        
Other (expense) income:        
Gain on sale of disposition of Wireless assets and operations $ 1,224,815 $ 0 $ 1,224,815 $ 0