Revenue Recognition - Schedule of Revenue by Product (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 1,087.5	$ 1,123.8	$ 3,235.1	$ 3,498.7
CSCA
Disaggregation of Revenue [Line Items]
Net sales	671.3	703.5	1,949.5	2,217.9
CSCA | Nutrition
Disaggregation of Revenue [Line Items]
Net sales	127.1	129.7	303.8	436.3
CSCA | Upper Respiratory
Disaggregation of Revenue [Line Items]
Net sales	120.9	131.2	370.0	422.2
CSCA | Digestive Health
Disaggregation of Revenue [Line Items]
Net sales	113.5	118.1	361.7	368.2
CSCA | Pain and Sleep-Aids
Disaggregation of Revenue [Line Items]
Net sales	87.7	94.5	251.9	294.6
CSCA | Healthy Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	80.9	79.4	221.3	219.3
CSCA | Oral Care
Disaggregation of Revenue [Line Items]
Net sales	66.9	76.7	204.8	235.5
CSCA | Skin Care
Disaggregation of Revenue [Line Items]
Net sales	51.9	58.2	158.6	189.8
CSCA | Women's Health
Disaggregation of Revenue [Line Items]
Net sales	18.0	10.5	62.0	35.6
CSCA | Vitamins, Minerals, and Supplements ("VMS")
Disaggregation of Revenue [Line Items]
Net sales	3.5	4.4	13.0	13.9
CSCA | Other CSCA
Disaggregation of Revenue [Line Items]
Net sales	0.9	0.8	2.4	2.5
CSCI
Disaggregation of Revenue [Line Items]
Net sales	416.3	420.3	1,285.5	1,280.7
CSCI | Upper Respiratory
Disaggregation of Revenue [Line Items]
Net sales	86.1	78.2	206.0	227.9
CSCI | Digestive Health
Disaggregation of Revenue [Line Items]
Net sales	9.0	10.8	27.0	30.0
CSCI | Pain and Sleep-Aids
Disaggregation of Revenue [Line Items]
Net sales	56.9	61.1	158.6	163.8
CSCI | Healthy Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	53.2	52.4	175.2	179.4
CSCI | Oral Care
Disaggregation of Revenue [Line Items]
Net sales	23.3	24.8	75.0	75.5
CSCI | Skin Care
Disaggregation of Revenue [Line Items]
Net sales	91.0	86.7	333.5	293.1
CSCI | Women's Health
Disaggregation of Revenue [Line Items]
Net sales	32.2	28.5	101.2	89.5
CSCI | Vitamins, Minerals, and Supplements ("VMS")
Disaggregation of Revenue [Line Items]
Net sales	43.0	46.1	127.4	135.4
CSCI | Other CSCI
Disaggregation of Revenue [Line Items]
Net sales	$ 21.6	$ 31.7	$ 81.5	$ 86.1