Segment Reporting - Revenues by Channel Reporting Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Segment Reporting Information [Line Items]
Revenue, net	$ 478.4	$ 474.2
Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	287.6	295.2
Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	53.0	30.8
Other Water
Segment Reporting Information [Line Items]
Revenue, net	56.3	55.4
Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	15.0	5.9
Other
Segment Reporting Information [Line Items]
Revenue, net	66.5	86.9
All Other
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
All Other | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
All Other | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
All Other | Other Water
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
All Other | Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
All Other | Other
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	365.5	350.7
North America | Operating Segments | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	238.8	237.4
North America | Operating Segments | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	45.1	23.7
North America | Operating Segments | Other Water
Segment Reporting Information [Line Items]
Revenue, net	40.9	42.2
North America | Operating Segments | Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	15.0	5.9
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue, net	25.7	41.5
Rest of World | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	112.9	123.5
Rest of World | Operating Segments | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	48.8	57.8
Rest of World | Operating Segments | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	7.9	7.1
Rest of World | Operating Segments | Other Water
Segment Reporting Information [Line Items]
Revenue, net	15.4	13.2
Rest of World | Operating Segments | Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0
Rest of World | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue, net	$ 40.8	$ 45.4