Accounting Policies (Details) $ / shares in Units, $ in Millions	Jan. 29, 2017 store $ / shares	Dec. 20, 2016 USD ($) store	Nov. 26, 2016 state store
Business Acquisition [Line Items]
Expected proceeds from sale of stores | $		$ 950
Rite Aid
Business Acquisition [Line Items]
Number of stores			4,547
Number of states in which entity operates | state			31
Number of stores to be sold		865
Maximum
Business Acquisition [Line Items]
Business acquisition share price (usd per share) | $ / shares	$ 7.00
Maximum | Rite Aid
Business Acquisition [Line Items]
Maximum stores required to be divested	1,200
Minimum
Business Acquisition [Line Items]
Business acquisition share price (usd per share) | $ / shares	$ 6.50
1,000 or fewer stores
Business Acquisition [Line Items]
Business acquisition share price (usd per share) | $ / shares	$ 7.00
Maximum stores required to be divested	1,000
1,000 to 1,200 stores | Maximum
Business Acquisition [Line Items]
Maximum stores required to be divested	1,200
1,000 to 1,200 stores | Minimum
Business Acquisition [Line Items]
Maximum stores required to be divested	1,000
1,200 stores
Business Acquisition [Line Items]
Business acquisition share price (usd per share) | $ / shares	$ 6.50
Maximum stores required to be divested	1,200