Segment Reporting - Revenues by Channel Reporting Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Segment Reporting Information [Line Items]
Revenue, net	$ 560.8	$ 536.9
Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, net	(1.1)
Home and Office Bottled Water Delivery [Member]
Segment Reporting Information [Line Items]
Revenue, net	228.9	218.0
Coffee and Tea Services [Member]
Segment Reporting Information [Line Items]
Revenue, net	163.2	166.2
Coffee and Tea Services [Member] | Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, net	(1.0)
Retail [Member]
Segment Reporting Information [Line Items]
Revenue, net	70.1	63.5
Concentrate and Other [Member]
Segment Reporting Information [Line Items]
Revenue, net	98.6	89.2
Concentrate and Other [Member] | Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, net	(0.1)
Route Based Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	371.1	352.3
Route Based Services [Member] | Home and Office Bottled Water Delivery [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	228.9	218.0
Route Based Services [Member] | Coffee and Tea Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	46.3	45.9
Route Based Services [Member] | Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	54.7	51.8
Route Based Services [Member] | Concentrate and Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	41.2	36.6
Coffee,Tea and Extract Solutions [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	146.1	143.3
Coffee,Tea and Extract Solutions [Member] | Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, net	1.1
Coffee,Tea and Extract Solutions [Member] | Coffee and Tea Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	117.2	119.7
Coffee,Tea and Extract Solutions [Member] | Concentrate and Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	28.9	23.6
All Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	44.7	41.3
All Other [Member] | Coffee and Tea Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	0.7	0.6
All Other [Member] | Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	15.4	11.7
All Other [Member] | Concentrate and Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	$ 28.6	$ 29.0