Segment Reporting - Revenues by Channel Reporting Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Segment Reporting Information [Line Items]
Revenue, net	$ 580.9	$ 476.7	$ 1,698.4	$ 1,102.0
Home and Office Bottled Water Delivery [Member]
Segment Reporting Information [Line Items]
Revenue, net	268.0	235.9	753.7	575.1
Coffee and Tea Services [Member]
Segment Reporting Information [Line Items]
Revenue, net	165.8	112.9	506.5	174.4
Retail [Member]
Segment Reporting Information [Line Items]
Revenue, net	55.2	52.9	161.7	165.5
Other [Member]
Segment Reporting Information [Line Items]
Revenue, net	91.9	75.0	276.5	187.0
Route Based Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	397.3	349.2	1,134.9	882.3
Route Based Services [Member] | Home and Office Bottled Water Delivery [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	268.0	235.9	753.7	575.1
Route Based Services [Member] | Coffee and Tea Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	44.2	38.9	134.9	100.4
Route Based Services [Member] | Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	43.5	42.9	127.8	127.7
Route Based Services [Member] | Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	41.6	31.5	118.5	79.1
Coffee,Tea and Extract Solutions [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	143.4	87.3	440.2	87.3
Coffee,Tea and Extract Solutions [Member] | Coffee and Tea Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	120.9	72.0	369.6	72.0
Coffee,Tea and Extract Solutions [Member] | Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	22.5	15.3	70.6	15.3
All Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	40.2	40.2	123.3	132.4
All Other [Member] | Coffee and Tea Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	0.7	2.0	2.0	2.0
All Other [Member] | Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	11.7	10.0	33.9	37.8
All Other [Member] | Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, net	$ 27.8	$ 28.2	$ 87.4	$ 92.6