Property and Equipment

12 Months Ended

Dec. 30, 2017

Property Plant And Equipment [Abstract]

Property and Equipment

8. PROPERTY AND EQUIPMENT

Property and equipment consisted of the following (in thousands):

	December 30, 2017			December 31, 2016			Range of Useful Lives
Land	$	312,909		$	303,208
Buildings and building improvements		1,189,634			1,144,041		10–40 years
Transportation equipment		949,236			835,089		5–10 years
Warehouse equipment		384,361			343,315		5–12 years
Office equipment, furniture and software		803,389			772,334		3–7 years
Construction in process		87,478			94,075
		3,727,007			3,492,062
Less accumulated depreciation and amortization		(1,925,792	)		(1,724,451	)
Property and equipment—net	$	1,801,215		$	1,767,611

Transportation equipment included $444 million and $354 million of capital lease assets at December 30, 2017 and December 31, 2016, respectively. Buildings and building improvements included $97 million of capital lease assets at December 30, 2017 and December 31, 2016. Accumulated amortization of capital lease assets was $181 million and $119 million at December 30, 2017 and December 31, 2016, respectively. Interest capitalized was $2 million and $1 million in fiscal years 2017 and 2016, respectively.

Depreciation and amortization expense of property and equipment, including amortization of capital lease assets, was $283 million, $266 million and $253 million for the fiscal years 2017, 2016 and 2015, respectively.