Subsequent Events Additional Information (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended
	Dec. 06, 2014 renewal_period	Jan. 07, 2015	Nov. 29, 2014 Store
Haggen, Inc [Member] | Administrative Services [Member]
Subsequent Event [Line Items]
Number of stores			100
Subsequent Event [Member] | Haggen, Inc [Member]
Subsequent Event [Line Items]
Term of transition services agreement	2 years
Transition Services Agreement, Number Of Renewal Periods	3
Transition Services Agreement, Renewal Period	1 year
Subsequent Event [Member] | Haggen, Inc [Member] | Administrative Services [Member]
Subsequent Event [Line Items]
Number of stores		164
Subsequent Event [Member] | Haggen, Inc [Member] | Haggen, Inc, Existing [Member] | Administrative Services [Member]
Subsequent Event [Line Items]
Number of stores		18
Subsequent Event [Member] | Haggen, Inc [Member] | Safeway Merger [Member] | Administrative Services [Member]
Subsequent Event [Line Items]
Number of stores		146
Subsequent Event [Member] | Supply Commitment [Member] | Haggen, Inc [Member]
Subsequent Event [Line Items]
Number of stores		64
Subsequent Event [Member] | Supply Commitment [Member] | Haggen, Inc [Member] | Haggen, Inc, Existing [Member]
Subsequent Event [Line Items]
Number of stores		18
Subsequent Event [Member] | Supply Commitment [Member] | Haggen, Inc [Member] | Safeway Merger [Member]
Subsequent Event [Line Items]
Number of stores		46
Subsequent Event [Member] | 2022 Senior Notes [Member]
Subsequent Event [Line Items]
Redemption amount		$ 350