Revenue Recognition - Schedule of Revenue by Product (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 1,074.5	$ 1,010.0
CSCA
Disaggregation of Revenue [Line Items]
Net sales	710.0	640.5
CSCA | Upper respiratory
Disaggregation of Revenue [Line Items]
Net sales	152.8	118.6
CSCA | Nutrition
Disaggregation of Revenue [Line Items]
Net sales	127.2	92.2
CSCA | Digestive health
Disaggregation of Revenue [Line Items]
Net sales	118.6	118.4
CSCA | Pain and sleep-aids
Disaggregation of Revenue [Line Items]
Net sales	102.9	95.1
CSCA | Oral care
Disaggregation of Revenue [Line Items]
Net sales	70.4	75.0
CSCA | Healthy lifestyle
Disaggregation of Revenue [Line Items]
Net sales	68.2	76.7
CSCA | Skincare and personal hygiene
Disaggregation of Revenue [Line Items]
Net sales	48.5	55.3
CSCA | Vitamins, minerals, and supplements
Disaggregation of Revenue [Line Items]
Net sales	7.7	7.8
CSCA | Other CSCA
Disaggregation of Revenue [Line Items]
Net sales	13.7	1.4
CSCI
Disaggregation of Revenue [Line Items]
Net sales	364.5	369.5
CSCI | Upper respiratory
Disaggregation of Revenue [Line Items]
Net sales	61.4	42.9
CSCI | Digestive health
Disaggregation of Revenue [Line Items]
Net sales	9.2	8.5
CSCI | Pain and sleep-aids
Disaggregation of Revenue [Line Items]
Net sales	51.7	49.0
CSCI | Oral care
Disaggregation of Revenue [Line Items]
Net sales	24.4	25.5
CSCI | Healthy lifestyle
Disaggregation of Revenue [Line Items]
Net sales	42.7	50.3
CSCI | Skincare and personal hygiene
Disaggregation of Revenue [Line Items]
Net sales	101.9	107.0
CSCI | Vitamins, minerals, and supplements
Disaggregation of Revenue [Line Items]
Net sales	47.9	59.0
CSCI | Other CSCI
Disaggregation of Revenue [Line Items]
Net sales	$ 25.3	$ 27.3