Segment Reporting - Revenues by Channel Reporting Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Segment Reporting Information [Line Items]
Revenue, net	$ 2,394.5	$ 2,372.9	$ 2,269.7
Eliminations
Segment Reporting Information [Line Items]
Revenue, net	(5.9)	(5.7)	0.0
Home and office bottled water delivery
Segment Reporting Information [Line Items]
Revenue, net	1,136.0	1,078.5	990.6
Home and office bottled water delivery | Eliminations
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
Coffee and tea services
Segment Reporting Information [Line Items]
Revenue, net	661.7	649.0	688.5
Coffee and tea services | Eliminations
Segment Reporting Information [Line Items]
Revenue, net	(5.9)	(5.7)	0.0
Retail
Segment Reporting Information [Line Items]
Revenue, net	297.6	286.0	282.2
Retail | Eliminations
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
Other
Segment Reporting Information [Line Items]
Revenue, net	299.2	359.4	308.4
Other | Eliminations
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
Route Based Services | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	1,788.2	1,710.3	1,599.6
Route Based Services | Home and office bottled water delivery | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	1,136.0	1,078.5	990.6
Route Based Services | Coffee and tea services | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	184.0	192.8	186.8
Route Based Services | Retail | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	297.6	286.0	282.2
Route Based Services | Other | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	170.6	153.0	140.0
Route Based Services | From other to home | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net		(83.7)	(50.2)
Route Based Services | To home from other | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net		2.0	1.2
Route Based Services | From retail to other | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net		(18.0)
Route Based Services | To other from retail | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net		0.2	1.0
Coffee, Tea and Extract Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	605.0	587.6	602.2
Coffee, Tea and Extract Solutions | Eliminations
Segment Reporting Information [Line Items]
Revenue, net	5.9	5.7
Coffee, Tea and Extract Solutions | Home and office bottled water delivery | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
Coffee, Tea and Extract Solutions | Coffee and tea services | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	483.6	461.9	501.7
Coffee, Tea and Extract Solutions | Retail | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
Coffee, Tea and Extract Solutions | Other | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	121.4	125.7	100.5
All Other | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	7.2	80.7	67.9
All Other | Home and office bottled water delivery | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
All Other | Coffee and tea services | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
All Other | Retail | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0
All Other | Other | Operating Segments
Segment Reporting Information [Line Items]
Revenue, net	$ 7.2	$ 80.7	$ 67.9