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Leases - Schedule of Future Minimum Rental Payments (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Schedule of Future Lease Payments [Line Items]  
2014 $ 264
2015 251
2016 243
2017 230
2018 223
Thereafter 2,075
Total minimum rent payments 3,286
Recourse capital leases [member]
 
Schedule of Future Lease Payments [Line Items]  
2014 8
2015 16
2016 6
2017 6
2018 6
Thereafter 106
Total minimum rent payments 148
Less: amount representing interest (75)
Present value of net minimum rent payments 73
Non-recourse capital leases [member]
 
Schedule of Future Lease Payments [Line Items]  
2014 26
2015 26
2016 26
2017 26
2018 26
Thereafter 272
Total minimum rent payments 402
Less: amount representing interest (147)
Present value of net minimum rent payments $ 255