- Definition

The increases or decreases in lease payments that result from changes occurring after the inception of the lease in the factors (other than the passage of time) on which lease payments are based, except that any escalation of minimum lease payments relating to increases in construction or acquisition cost of the leased property or for increases in some measure of cost or value during the construction or preconstruction period, are excluded from contingent rentals. Contingent rentals also may include amounts for which the triggering events have not yet occurred or the specified targets for which have not yet been achieved (such as sales based percentage rent), but which events are considered probable of occurring or which specified targets are considered probable of being achieved.

+ References+ Details

Commitments (Details) (USD $)	12 Months Ended
Commitments (Details) (USD $)	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Aggregate minimum rentals under non-cancelable leases [Line Items]
Operating leases, rent expense	$ 2,800,000,000us-gaap_LeaseAndRentalExpense	$ 2,800,000,000us-gaap_LeaseAndRentalExpense	$ 2,600,000,000us-gaap_LeaseAndRentalExpense
Potential future lease commitments for land and buildings, number of future locations	282
Operating leases, rent expense, contingent rentals	58,000,000
Potential aggregate termination payment	$ 64,000,000
Minimum
Aggregate minimum rentals under non-cancelable leases [Line Items]
Commitment on lease years	1
Maximum
Aggregate minimum rentals under non-cancelable leases [Line Items]
Commitment on lease years	30