XML 42 R29.htm IDEA: XBRL DOCUMENT v3.3.1.900
Schedule II, Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]  
Schedule II, Valuation and Qualifying Accounts
PUBLIC SERVICE CO. OF COLORADO AND SUBSIDIARIES
VALUATION AND QUALIFYING ACCOUNTS
YEARS ENDED DEC. 31, 2015, 2014 AND 2013
(amounts in thousands)
 
 
 
Additions
 
 
 
 
 
Balance at
Jan. 1
 
Charged to Costs and Expenses
 
Charged to Other Accounts(a)
 
Deductions from
Reserves(b)
 
Balance at
Dec. 31
Allowance for bad debts:
 
 
 
 
 
 
 
 
 
2015
$
23,122

 
$
13,052

 
$
5,175

 
$
21,227

 
$
20,122

2014
22,505

 
17,005

 
6,240

 
22,628

 
23,122

2013
21,918

 
16,784

 
7,005

 
23,202

 
22,505


(a) 
Recovery of amounts previously written off.
(b) 
Deductions relate primarily to bad debt write-offs.