Contingencies (Details)	0 Months Ended	3 Months Ended
	Jun. 13, 2014	Jun. 14, 2014 complaint
Loss Contingencies [Line Items]
Number of lawsuits filed		14
Amended Merger Agreement, assumed tax rate	39.25%
In Re Safeway Inc. Stockholders Litigation [Member]
Loss Contingencies [Line Items]
Number of lawsuits filed		7
County of Alameda Litigation Cases [Member]
Loss Contingencies [Line Items]
Number of lawsuits filed		4
Northern District of California Cases [Member]
Loss Contingencies [Line Items]
Number of lawsuits filed		3