Property and Equipment

9 Months Ended

Sep. 30, 2017

Property Plant And Equipment [Abstract]

Property and Equipment

7. PROPERTY AND EQUIPMENT

Property and equipment are stated at cost. Depreciation of property and equipment is calculated using the straight-line method over the estimated useful lives of the assets, which range from three to 40 years. Property and equipment under capital leases and leasehold improvements are amortized on a straight-line basis over the shorter of the remaining terms of the respective lease or the estimated useful lives of the assets. At September 30, 2017 and December 31, 2016, Property and equipment-net included accumulated depreciation of $1,899 million and $1,724 million, respectively. Depreciation expense was $71 million and $66 million for the 13-weeks ended September 30, 2017 and October 1, 2016, respectively, and $210 million and $198 million for the 39-weeks ended September 30, 2017 and October 1, 2016, respectively.