Leases - Schedule of Maturities of Operating Lease Liabilities and Aggregate Future Commitments Under Operating Leases (Details) - USD ($) $ in Thousands		Mar. 30, 2019		Dec. 29, 2018
Operating Leases
2019 (excluding the three months ended March 30, 2019)		$ 58,730
2019				$ 78,337
2020		71,142		73,331
2021		63,969		66,491
2022		56,501		59,515
2023		48,089		51,076
2024		37,133
Thereafter				149,318
Thereafter		92,942
Total lease payments		428,506	[1]	$ 478,068	[2]
Less: Interest		95,863
Present value of operating lease liabilities	[3]	$ 332,643

[1] Total lease payments exclude $53 million of legally binding minimum lease payments for leases signed but not yet commenced.

[2] Total lease payments include $62 million of legally binding minimum lease payments for leases signed but not yet commenced.

[3] Includes the current portion of $54 million for operating lease liabilities.