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Leases
12 Months Ended
Dec. 31, 2013
Leases [Abstract]  
Leases

17. Leases

We lease office space and equipment under non-cancelable operating leases with third parties. Some of our leases contain renewal options and escalation clauses based on increases in property taxes and building operating costs.

As of December 31, 2013, future minimum lease payments under non-cancelable operating leases (net of sublease income) are as follows:

 

 

 

 

 

 

 

 

 

 

 

 

Gross Lease

 

 

Sublease

 

 

Net Lease

 

 

Commitments

 

 

Income

 

 

Commitments

 

(in millions)

Year ending December 31:

 

 

 

 

 

 

 

 

    2014

$

83 

 

$

 

$

78 

    2015

 

81 

 

 

 

 

78 

    2016

 

74 

 

 

 

 

71 

    2017

 

46 

 

 

 

 

44 

    2018

 

42 

 

 

 

 

40 

    Thereafter

 

152 

 

 

13 

 

 

139 

Total future minimum lease payments

$

478 

 

$

28 

 

$

450 

Rent expense for operating leases (net of sublease income of $3 million in 2013 and $4 million in 2012 and 2011) was $84 million in 2013, $83 million in 2012 and $87 million in 2011.