Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Restructuring [Abstract]
Restructuring expense	$ 0				$ 0					$ 25,114	$ 156,484
2023 Plan [Member]
Restructuring [Abstract]
Severance charges				$ 16,900		$ 1,000	$ 4,100	$ 10,000
Impairment of fixed assets						6,400	1,000
Cash payments	100	$ 500	$ 4,700	14,800	3,900	2,800	7,000	300
Ending restructuring accrual	900	1,000	1,500	6,200	3,200	7,100	8,800	9,700	$ 1,000	$ 900	$ 3,200	$ 6,200
Other associated restructuring costs	$ 0	0	$ 0	900	$ 0	100	2,000
Non-cash restructuring charges						7,200
Other asset write-downs						800
Restructuring expense				42,217		8,364	7,134	10,003				67,718
2023 Plan [Member] | Nu Skin [Member]
Restructuring [Abstract]
Restructuring expense				8,290		428	5,661	5,356				19,735
2023 Plan [Member] | Americas [Member]
Restructuring [Abstract]
Restructuring expense				159		267	3,145	598				4,169
2023 Plan [Member] | Southeast Asia/Pacific [Member]
Restructuring [Abstract]
Restructuring expense				1,589		190	307	862				2,948
2023 Plan [Member] | Mainland China [Member]
Restructuring [Abstract]
Restructuring expense				3,449		(162)	1,017	2,910				7,214
2023 Plan [Member] | Japan [Member]
Restructuring [Abstract]
Restructuring expense				1		0	24	0				25
2023 Plan [Member] | Europe & Africa [Member]
Restructuring [Abstract]
Restructuring expense				1,152		414	677	554				2,797
2023 Plan [Member] | South Korea [Member]
Restructuring [Abstract]
Restructuring expense				1,646		(134)	134	0				1,646
2023 Plan [Member] | Hong Kong/Taiwan [Member]
Restructuring [Abstract]
Restructuring expense				294		(147)	357	432				936
2023 Plan [Member] | Rhyz [Member]
Restructuring [Abstract]
Restructuring expense				1,040		40	0	0				1,080
2023 Plan [Member] | Manufacturing [Member]
Restructuring [Abstract]
Restructuring expense				0		0	0	0				0
2023 Plan [Member] | Rhyz Other [Member]
Restructuring [Abstract]
Restructuring expense				1,040		40	0	0				1,080
2023 Plan [Member] | Corporate and Other [Member]
Restructuring [Abstract]
Restructuring expense				32,887		$ 7,896	$ 1,473	$ 4,647				46,903
2023 Plan [Member] | Severance [Member]
Restructuring [Abstract]
Severance charges									27,900
2023 Plan [Member] | Other Cash Charges [Member]
Restructuring [Abstract]
Estimated charges under restructuring program		1,100							1,100
2023 Plan [Member] | Non-Cash Charges [Member]
Restructuring [Abstract]
Estimated charges under restructuring program		$ 38,800							38,800
2023 Plan [Member] | Fixed Asset Impairments [Member]
Restructuring [Abstract]
Impairment of fixed assets				30,200					$ 36,600
2023 Plan [Member] | Other Non-Cash Charges [Member]
Restructuring [Abstract]
Estimated charges under restructuring program				$ 1,400								$ 1,400