CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue:
Total revenue	$ 1,560,373,000	$ 1,747,856,000	$ 2,003,343,000
Costs and Expenses (exclusive of depreciation and amortization):
Selling, general and administrative expenses	375,538,000	439,984,000	462,687,000
Depreciation and amortization	365,902,000	389,632,000	431,065,000
Impairment of long-lived assets and goodwill		532,940,000
Total costs and expenses	1,730,203,000	2,142,837,000	1,748,891,000
Operating income (loss)	(169,830,000)	(394,981,000)	254,452,000
Other Income (Expense):
Interest income	25,393,000	85,036,000	30,812,000
Interest expense, net of amounts capitalized (Note 2)	(98,802,000)	(89,569,000)	(92,386,000)
Other, net (Note 5)	(9,024,000)	(32,798,000)	473,000
Total other income (expense), net	(82,433,000)	(37,331,000)	(61,101,000)
Income (loss) before income taxes	(252,263,000)	(432,312,000)	193,351,000
Income tax benefit (provision), net	34,153,000	(46,126,000)	(54,441,000)
Net income (loss)	(218,110,000)	(478,438,000)	138,910,000
Less: Net income (loss) attributable to noncontrolling interests	(8,707,000)	(16,569,000)	(10,503,000)
Net income (loss) attributable to HSSC	(209,403,000)	(461,869,000)	149,413,000
Service revenue
Revenue:
Total revenue	1,210,840,000	1,448,489,000	1,629,194,000
Costs and Expenses (exclusive of depreciation and amortization):
Cost of sales	681,021,000	540,945,000	562,849,000
Equipment sales and other revenue
Revenue:
Total revenue	349,533,000	299,367,000	374,149,000
Costs and Expenses (exclusive of depreciation and amortization):
Cost of sales	$ 307,742,000	$ 239,336,000	$ 292,290,000