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Debt - Schedule of Debt Covenants (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2016
USD ($)
Line of Credit Facility [Line Items]  
Net proceeds from future equity issuances (as a percent) 75.00%
Line Of Credit Facility Covenant  
Line of Credit Facility [Line Items]  
Maximum leverage ratio (as a percent) 0.60
Minimum fixed charge coverage ratio 1.50
Minimum tangible net worth $ 1,910
Secured recourse indebtedness ratio 45.00%
Line Of Credit Facility Covenant Actual Results  
Line of Credit Facility [Line Items]  
Maximum leverage ratio (as a percent) 0.239
Minimum fixed charge coverage ratio 4.09
Minimum tangible net worth $ 2,520
Secured recourse indebtedness ratio 27.10%