Segment Reporting - Revenues by Channel Reporting Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenue, net	$ 609.3	$ 580.9	$ 1,773.7	$ 1,698.4
Home and office bottled water delivery
Segment Reporting Information [Line Items]
Revenue, net	271.1	252.5	759.5	715.5
Coffee and tea services
Segment Reporting Information [Line Items]
Revenue, net	157.9	165.8	487.4	506.5
Retail
Segment Reporting Information [Line Items]
Revenue, net	77.9	70.3	225.9	199.6
Other
Segment Reporting Information [Line Items]
Revenue, net	102.4	92.3	300.9	276.8
Operating Segments | Route Based Services
Segment Reporting Information [Line Items]
Revenue, net	423.7	397.3	1,207.4	1,134.9
Operating Segments | Route Based Services | Home and office bottled water delivery
Segment Reporting Information [Line Items]
Revenue, net	271.1	252.5	759.5	715.5
Operating Segments | Route Based Services | Coffee and tea services
Segment Reporting Information [Line Items]
Revenue, net	45.4	44.2	139.8	134.9
Operating Segments | Route Based Services | Retail
Segment Reporting Information [Line Items]
Revenue, net	61.3	58.6	177.1	165.7
Operating Segments | Route Based Services | Other
Segment Reporting Information [Line Items]
Revenue, net	45.9	42.0	131.0	118.8
Operating Segments | Coffee, Tea and Extract Solutions
Segment Reporting Information [Line Items]
Revenue, net	140.2	143.4	431.8	440.2
Operating Segments | Coffee, Tea and Extract Solutions | Home and office bottled water delivery
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
Operating Segments | Coffee, Tea and Extract Solutions | Coffee and tea services
Segment Reporting Information [Line Items]
Revenue, net	113.0	120.9	349.0	369.6
Operating Segments | Coffee, Tea and Extract Solutions | Retail
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
Operating Segments | Coffee, Tea and Extract Solutions | Other
Segment Reporting Information [Line Items]
Revenue, net	27.2	22.5	82.8	70.6
Operating Segments | All Other
Segment Reporting Information [Line Items]
Revenue, net	47.1	40.2	138.8	123.3
Operating Segments | All Other | Home and office bottled water delivery
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
Operating Segments | All Other | Coffee and tea services
Segment Reporting Information [Line Items]
Revenue, net	0.9	0.7	2.5	2.0
Operating Segments | All Other | Retail
Segment Reporting Information [Line Items]
Revenue, net	16.9	11.7	49.1	33.9
Operating Segments | All Other | Other
Segment Reporting Information [Line Items]
Revenue, net	29.3	27.8	87.2	87.4
Eliminations
Segment Reporting Information [Line Items]
Revenue, net	(1.7)	0.0	(4.3)	0.0
Eliminations | Home and office bottled water delivery
Segment Reporting Information [Line Items]
Revenue, net	0.0	0.0	0.0	0.0
Eliminations | Coffee and tea services
Segment Reporting Information [Line Items]
Revenue, net	(1.4)	0.0	(3.9)	0.0
Eliminations | Retail
Segment Reporting Information [Line Items]
Revenue, net	(0.3)	0.0	(0.3)	0.0
Eliminations | Other
Segment Reporting Information [Line Items]
Revenue, net	0.0	$ 0.0	(0.1)	$ 0.0
Eliminations | Coffee, Tea and Extract Solutions
Segment Reporting Information [Line Items]
Revenue, net	$ 1.4		$ 4.0