Subsequent Event (Details) (U.S. Pension Plans, USD $) In Millions, unless otherwise specified	4 Months Ended
Dec. 29, 2012
U.S. Pension Plans
Subsequent Event [Line Items]
Expected pre-tax non-cash pension settlement charge for early payout for former employees, minimum	$ 25
Expected pre-tax non-cash pension settlement charge for early payout for former employees, maximum	$ 75

Pre-tax, non-cash settlement charge for voluntary early payout of pension benefits, maximum expected.

No definition available.

Name:	yum_ExpectedPreTaxNonCashPensionSettlementChargeForEarlyPayoutForFormerEmployeesMaximum
Namespace Prefix:	yum_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration