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Basis of Presentation and Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2014
Accounting Policies [Abstract]  
Schedule of Components of Restricted Cash
The table below represents the components of our restricted cash as of March 31, 2014 and December 31, 2013 (in millions):

 
March 31, 2014
 
December 31, 2013
 
Current
 
Non-Current
 
Total
 
Current
 
Non-Current
 
Total
Debt service(1)
$
11

 
$
41

 
$
52

 
$
11

 
$
41

 
$
52

Rent reserve
4

 

 
4

 
3

 

 
3

Construction/major maintenance
34

 
22

 
56

 
35

 
20

 
55

Security/project/insurance
146

 
6

 
152

 
151

 
6

 
157

Other

 
2

 
2

 
3

 
2

 
5

Total
$
195

 
$
71

 
$
266

 
$
203

 
$
69

 
$
272

___________
(1)
At both March 31, 2014 and December 31, 2013, amounts restricted for debt service included approximately $24 million of repurchase agreements with a financial institution containing maturity dates greater than one year.
Schedule of Property, Plant and Equipment
Property, Plant and Equipment, Net — At March 31, 2014 and December 31, 2013, the components of property, plant and equipment are stated at cost less accumulated depreciation as follows (in millions):
 
March 31, 2014
 
December 31, 2013
 
Depreciable Lives
Buildings, machinery and equipment(1)
$
16,516

 
$
15,838

 
3 – 47 Years
Geothermal properties
1,267

 
1,265

 
13 – 59 Years
Other
167

 
164

 
3 – 47 Years
 
17,950

 
17,267

 
 
Less: Accumulated depreciation
5,046

 
4,897

 
 
 
12,904

 
12,370

 
 
Land
109

 
103

 
 
Construction in progress
585

 
522

 
 
Property, plant and equipment, net
$
13,598

 
$
12,995