Notes Receivable
 3 Months Ended
Mar. 31, 2015
Receivables [Abstract]  
Notes Receivable
NOTES RECEIVABLE
The following table shows the composition of our notes receivable balances (net of reserves and unamortized discounts) at the end of the 2015 first quarter and year-end 2014:
 
At Period End
($ in millions)
March 31,
2015
 
December 31,
2014
Senior, mezzanine, and other loans
$
245

 
$
242

Less current portion
(91
)
 
(27
)
 
$
154

 
$
215


We do not have any past due notes receivable amounts at the end of the 2015 first quarter. The unamortized discounts for our notes receivable were $25 million at the end of the 2015 first quarter and $25 million at year-end 2014.
The following table presents the expected future principal payments (net of reserves and unamortized discounts) as well as interest rates for our notes receivable as of the end of the 2015 first quarter:
Notes Receivable Principal Payments (net of reserves and unamortized discounts) and Interest Rates ($ in millions)
 
Amount
2015
 
$
20

2016
 
73

2017
 
3

2018
 
4

2019
 
2

Thereafter
 
143

Balance at March 31, 2015
 
$
245

Weighted average interest rate at March 31, 2015
 
6.0
%
Range of stated interest rates at March 31, 2015
 
0 - 9.0%


At the end of the 2015 first quarter, our recorded investment in impaired senior, mezzanine, and other loans notes receivable was $66 million. We had a $50 million reserve representing an allowance for credit losses, leaving $16 million of our investment in impaired loans for which we had no related allowance for credit losses. At year-end 2014, our recorded investment in impaired senior, mezzanine, and other loans was $63 million, and we had a $50 million notes receivable reserve representing an allowance for credit losses, leaving $13 million of our investment in impaired loans for which we had no related allowance for credit losses. Our average investment in impaired notes receivable totaled $65 million for the 2015 first quarter and $101 million for the 2014 first quarter.