CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue:
Total revenue	$ 2,946,411	$ 3,133,411
Costs and Expenses (exclusive of depreciation):
Cost of services	1,856,592	1,890,096
Cost of sales - equipment and other	17,300	20,872
Selling, general and administrative expenses	335,720	401,751
Depreciation and amortization	83,900	95,916
Total costs and expenses	2,293,512	2,408,635
Operating income (loss)	652,899	724,776
Other Income (Expense):
Interest income	120,386	97,120
Interest expense, net of amounts capitalized	(198,800)	(232,369)
Other, net	(579)	790
Total other income (expense)	(78,993)	(134,459)
Income (loss) before income taxes	573,906	590,317
Income tax (provision) benefit, net	(140,623)	(145,906)
Net income (loss)	433,283	444,411
Comprehensive Income (Loss):
Net income (loss)	433,283	444,411
Other comprehensive income (loss):
Foreign currency translation adjustments	136	(187)
Unrealized holding gains (losses) on available-for-sale debt securities	12	(76)
Deferred income tax (expense) benefit, net	(13)	21
Total other comprehensive income (loss), net of tax	135	(242)
Comprehensive income (loss)	433,418	444,169
Service revenue
Revenue:
Total revenue	2,924,045	3,108,313
Equipment sales and other revenue
Revenue:
Total revenue	$ 22,366	$ 25,098