Revenue Recognition - Schedule of Revenue by Product (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 1,042.7	$ 1,003.0	$ 3,033.8	$ 3,035.0
CSCA
Disaggregation of Revenue [Line Items]
Net sales	694.2	664.0	1,957.0	1,992.2
CSCA | Upper respiratory
Disaggregation of Revenue [Line Items]
Net sales	121.9	117.1	345.8	397.2
CSCA | Digestive health
Disaggregation of Revenue [Line Items]
Net sales	110.6	111.8	344.0	339.9
CSCA | Pain and sleep-aids
Disaggregation of Revenue [Line Items]
Net sales	108.4	102.6	292.9	325.7
CSCA | Nutrition
Disaggregation of Revenue [Line Items]
Net sales	105.3	100.3	293.3	291.5
CSCA | Oral self-care
Disaggregation of Revenue [Line Items]
Net sales	76.7	81.9	227.4	202.5
CSCA | Healthy lifestyle
Disaggregation of Revenue [Line Items]
Net sales	72.9	86.9	214.9	256.2
CSCA | Skincare and personal hygiene
Disaggregation of Revenue [Line Items]
Net sales	56.0	51.4	165.9	145.4
CSCA | Vitamins, minerals, and supplements
Disaggregation of Revenue [Line Items]
Net sales	8.1	6.3	24.3	19.1
CSCA | Other CSCA
Disaggregation of Revenue [Line Items]
Net sales	34.3	5.7	48.5	14.7
CSCI
Disaggregation of Revenue [Line Items]
Net sales	348.5	339.0	1,076.8	1,042.8
CSCI | Upper respiratory
Disaggregation of Revenue [Line Items]
Net sales	58.7	62.3	144.2	191.9
CSCI | Digestive health
Disaggregation of Revenue [Line Items]
Net sales	10.1	6.8	28.3	17.9
CSCI | Pain and sleep-aids
Disaggregation of Revenue [Line Items]
Net sales	52.1	49.0	148.4	136.0
CSCI | Oral self-care
Disaggregation of Revenue [Line Items]
Net sales	24.4	25.2	72.4	68.8
CSCI | Healthy lifestyle
Disaggregation of Revenue [Line Items]
Net sales	42.2	40.6	140.5	124.7
CSCI | Skincare and personal hygiene
Disaggregation of Revenue [Line Items]
Net sales	88.5	83.1	307.9	275.4
CSCI | Vitamins, minerals, and supplements
Disaggregation of Revenue [Line Items]
Net sales	54.7	52.9	162.8	139.9
CSCI | Other CSCI
Disaggregation of Revenue [Line Items]
Net sales	$ 17.8	$ 19.1	$ 72.3	$ 88.2