Phillips 66 | 2013 | FY | 3

Operating lease rental expense for the years ended December 31 was:
 
 
Millions of Dollars
 
2013

 
2012

 
2011

 
 
 
 
 
 
Minimum rentals
$
572

 
554

 
576

Contingent rentals
7

 
8

 
5

Less: sublease rental income
133

 
93

 
97

 
$
446

 
469

 
484

us-gaap:ScheduleOfRentExpenseTableTextBlock