credit rating fall below investment grade , the value of the outstanding undivided interest held by investors would be reduced , and , in certain cases , the investors would have the right to discontinue the facility .
the railroad collected approximately $ 20.1 billion and $ 18.8 billion of receivables during the years ended december 31 , 2012 and 2011 , respectively .
upri used certain of these proceeds to purchase new receivables under the facility .
the costs of the receivables securitization facility include interest , which will vary based on prevailing commercial paper rates , program fees paid to banks , commercial paper issuing costs , and fees for unused commitment availability .
the costs of the receivables securitization facility are included in interest expense and were $ 3 million , $ 4 million and $ 6 million for 2012 , 2011 and 2010 , respectively .
the investors have no recourse to the railroad 2019s other assets , except for customary warranty and indemnity claims .
creditors of the railroad do not have recourse to the assets of upri .
in july 2012 , the receivables securitization facility was renewed for an additional 364-day period at comparable terms and conditions .
subsequent event 2013 on january 2 , 2013 , we transferred an additional $ 300 million in undivided interest to investors under the receivables securitization facility , increasing the value of the outstanding undivided interest held by investors from $ 100 million to $ 400 million .
contractual obligations and commercial commitments as described in the notes to the consolidated financial statements and as referenced in the tables below , we have contractual obligations and commercial commitments that may affect our financial condition .
based on our assessment of the underlying provisions and circumstances of our contractual obligations and commercial commitments , including material sources of off-balance sheet and structured finance arrangements , other than the risks that we and other similarly situated companies face with respect to the condition of the capital markets ( as described in item 1a of part ii of this report ) , there is no known trend , demand , commitment , event , or uncertainty that is reasonably likely to occur that would have a material adverse effect on our consolidated results of operations , financial condition , or liquidity .
in addition , our commercial obligations , financings , and commitments are customary transactions that are similar to those of other comparable corporations , particularly within the transportation industry .
the following tables identify material obligations and commitments as of december 31 , 2012 : payments due by december 31 , contractual obligations after millions total 2013 2014 2015 2016 2017 2017 other .

<i>Payments Due by December 31,</i>
<i>Contractual Obligations</i><i>Millions</i>
<i>Total</i>
<i>2013</i>
<i>2014</i>
<i>2015</i>
<i>2016</i>
<i>2017</i>
<i>After</i><i>2017</i>
<i>Other</i>
Debt [a]
$12,637
$507
$904
$632
$769
$900
$8,925
$-
Operating leases [b]
4,241
525
466
410
375
339
2,126
-
Capital lease obligations [c]
2,441
282
265
253
232
243
1,166
-
Purchase obligations [d]
5,877
3,004
1,238
372
334
213
684
32
Other post retirement benefits [e]
452
43
44
45
45
46
229
-
Income tax contingencies [f]
115
-
-
-
-
-
-
115
Total contractualobligations
$25,763
$4,361
$2,917
$1,712
$1,755
$1,741
$13,130
$147

[a] excludes capital lease obligations of $ 1848 million and unamortized discount of $ ( 365 ) million .
includes an interest component of $ 5123 million .
[b] includes leases for locomotives , freight cars , other equipment , and real estate .
[c] represents total obligations , including interest component of $ 593 million .
[d] purchase obligations include locomotive maintenance contracts ; purchase commitments for fuel purchases , locomotives , ties , ballast , and rail ; and agreements to purchase other goods and services .
for amounts where we cannot reasonably estimate the year of settlement , they are reflected in the other column .
[e] includes estimated other post retirement , medical , and life insurance payments , payments made under the unfunded pension plan for the next ten years .
[f] future cash flows for income tax contingencies reflect the recorded liabilities and assets for unrecognized tax benefits , including interest and penalties , as of december 31 , 2012 .
for amounts where the year of settlement is uncertain , they are reflected in the other column. .

Question: Analyse this data from a financial earnings document. what is the principal portion of total capital lease obligations , in millions?
Choices:
1447513
-1635
1848.0
5284
-361
Correct choice index: 2