Segment Information - Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Dec. 31, 2018
Segment Reporting Information, Profit (Loss)
Net revenues	$ 979,187	$ 1,010,260	$ 4,346,847
Impairment and restructuring charges	6,545	3,719
Adjusted EBITDA	74,508	89,278
North America
Segment Reporting Information, Profit (Loss)
Net revenues	586,736	565,105
Europe
Segment Reporting Information, Profit (Loss)
Net revenues	281,493	299,966
Australasia
Segment Reporting Information, Profit (Loss)
Net revenues	110,958	145,189
Operating Segments
Segment Reporting Information, Profit (Loss)
Net revenues	981,827	1,012,214
Impairment and restructuring charges	3,208	3,732
Adjusted EBITDA	81,041	96,814
Operating Segments | North America
Segment Reporting Information, Profit (Loss)
Net revenues	587,048	565,701
Impairment and restructuring charges	943	1,958
Adjusted EBITDA	48,990	52,796
Operating Segments | Europe
Segment Reporting Information, Profit (Loss)
Net revenues	281,807	299,993
Impairment and restructuring charges	2,001	1,309
Adjusted EBITDA	23,326	27,638
Operating Segments | Australasia
Segment Reporting Information, Profit (Loss)
Net revenues	112,972	146,520
Impairment and restructuring charges	264	465
Adjusted EBITDA	8,725	16,380
Corporate and Unallocated Costs
Segment Reporting Information, Profit (Loss)
Impairment and restructuring charges	3,337	(13)
Adjusted EBITDA	(6,533)	(7,536)
Intersegment Eliminations
Segment Reporting Information, Profit (Loss)
Net revenues	(2,640)	(1,954)
Intersegment Eliminations | North America
Segment Reporting Information, Profit (Loss)
Net revenues	(312)	(596)
Intersegment Eliminations | Europe
Segment Reporting Information, Profit (Loss)
Net revenues	(314)	(27)
Intersegment Eliminations | Australasia
Segment Reporting Information, Profit (Loss)
Net revenues	$ (2,014)	$ (1,331)