Segment Reporting - Revenues by Channel Reporting Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Segment Reporting Information [Line Items]
Revenue, net	$ 526.1	$ 456.8	$ 1,004.5	$ 931.0
Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	323.0	268.1	610.6	563.3
Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	53.1	57.5	106.1	88.3
Other Water
Segment Reporting Information [Line Items]
Revenue, net	64.6	56.8	120.9	112.2
Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	17.6	20.8	32.6	26.7
Other
Segment Reporting Information [Line Items]
Revenue, net	67.8	53.6	134.3	140.5
All Other
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
All Other | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
All Other | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
All Other | Other Water
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
All Other | Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
All Other | Other
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	396.7	363.9	762.2	714.6
North America | Operating Segments | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	264.9	225.8	503.7	463.2
North America | Operating Segments | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	45.1	51.2	90.2	74.9
North America | Operating Segments | Other Water
Segment Reporting Information [Line Items]
Revenue, net	42.2	42.5	83.1	84.7
North America | Operating Segments | Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	17.6	20.8	32.6	26.7
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue, net	26.9	23.6	52.6	65.1
Rest of World | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	129.4	92.9	242.3	216.4
Rest of World | Operating Segments | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Revenue, net	58.1	42.3	106.9	100.1
Rest of World | Operating Segments | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Revenue, net	8.0	6.3	15.9	13.4
Rest of World | Operating Segments | Other Water
Segment Reporting Information [Line Items]
Revenue, net	22.4	14.3	37.8	27.5
Rest of World | Operating Segments | Water Dispensers
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
Rest of World | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue, net	$ 40.9	$ 30.0	$ 81.7	$ 75.4