SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2026 USD ($) segment	Jun. 30, 2025 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment					1
Segment Reporting [Line Items]
Infusion services net revenue	$ 1,442,400		$ 1,416,085		$ 2,793,054	$ 2,749,057
(Expense) Income:
Depreciation and amortization expense	(17,452)		(16,241)		(32,359)	(31,987)
Interest expense, net	(14,020)		(14,447)		(27,324)	(27,678)
Equity in earnings of joint ventures	1,700		1,400		3,393	3,124
Other, net	1,163		(797)		1,236	(4,927)
Income tax expense	(20,074)		(18,338)		(35,734)	(35,152)
NET INCOME	53,913	$ 45,343	50,523	$ 46,742	99,256	97,265
Reportable Segment
Segment Reporting [Line Items]
Infusion services net revenue	1,416,777		1,393,008		2,742,784	2,704,189
Other revenue	25,623		23,077		50,270	44,868
Total Option Care Health revenue	1,442,400		1,416,085		2,793,054	2,749,057
(Expense) Income:
Cost of net revenues - drugs	(1,024,241)		(1,004,610)		(1,973,605)	(1,937,678)
Salaries, benefits, and other employee expense	(213,631)		(212,195)		(430,224)	(417,887)
Other segment items	(101,936)		(100,329)		(199,181)	(199,607)
Depreciation and amortization expense	(17,452)		(16,241)		(32,359)	(31,987)
Interest expense, net	(14,020)		(14,447)		(27,324)	(27,678)
Equity in earnings of joint ventures	1,704		1,395		3,393	3,124
Other, net	1,163		(797)		1,236	(4,927)
Income tax expense	(20,074)		(18,338)		(35,734)	(35,152)
NET INCOME	$ 53,913		$ 50,523		$ 99,256	$ 97,265