Segment Reporting - Revenues by Channel Reporting Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Segment Reporting Information [Line Items]
Total	$ 2,215.1	$ 2,073.3	$ 1,953.5
Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Total	1,490.7	1,276.5	1,177.4
Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Total	227.4	213.4	204.4
Other Water
Segment Reporting Information [Line Items]
Total	151.8	244.3	224.2
Water Dispensers
Segment Reporting Information [Line Items]
Total	70.5	65.4	75.9
Other
Segment Reporting Information [Line Items]
Total	274.7	273.7	271.6
Operating Segments | North America
Segment Reporting Information [Line Items]
Total	1,685.6	1,562.9	1,493.2
Operating Segments | North America | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Total	1,242.8	1,051.0	965.8
Operating Segments | North America | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Total	192.0	180.5	175.1
Operating Segments | North America | Other Water
Segment Reporting Information [Line Items]
Total	73.8	162.6	160.7
Operating Segments | North America | Water Dispensers
Segment Reporting Information [Line Items]
Total	70.5	65.4	75.9
Operating Segments | North America | Other
Segment Reporting Information [Line Items]
Total	106.5	103.4	115.7
Operating Segments | Europe
Segment Reporting Information [Line Items]
Total	265.3	247.6	240.5
Operating Segments | Europe | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Total	201.9	182.4	177.6
Operating Segments | Europe | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Total	32.6	32.3	29.3
Operating Segments | Europe | Other Water
Segment Reporting Information [Line Items]
Total	1.6	1.2	0.0
Operating Segments | Europe | Water Dispensers
Segment Reporting Information [Line Items]
Total	0.0	0.0	0.0
Operating Segments | Europe | Other
Segment Reporting Information [Line Items]
Total	29.2	31.7	33.6
Other
Segment Reporting Information [Line Items]
Total	264.2	263.8	221.3
Other | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Total	46.0	43.1	34.0
Other | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Total	2.8	0.6	0.0
Other | Other Water
Segment Reporting Information [Line Items]
Total	76.4	80.5	63.5
Other | Water Dispensers
Segment Reporting Information [Line Items]
Total	0.0	0.0	0.0
Other | Other
Segment Reporting Information [Line Items]
Total	139.0	139.6	123.8
Eliminations
Segment Reporting Information [Line Items]
Total	0.0	(1.0)	(1.5)
Eliminations | Water Direct/Water Exchange
Segment Reporting Information [Line Items]
Total	0.0	0.0	0.0
Eliminations | Water Refill/Water Filtration
Segment Reporting Information [Line Items]
Total	0.0	0.0	0.0
Eliminations | Other Water
Segment Reporting Information [Line Items]
Total	0.0	0.0	0.0
Eliminations | Water Dispensers
Segment Reporting Information [Line Items]
Total	0.0	0.0	0.0
Eliminations | Other
Segment Reporting Information [Line Items]
Total	$ 0.0	$ (1.0)	$ 1.5