v2.4.0.6
Quarterly Consolidated Financial Data (unaudited) (Tables)
 12 Months Ended
Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Consolidated Financial Data (unaudited)
 
Quarter Ended
 
December 31
 
September 30
 
June 30
 
March 31
 
(in millions, except per share amounts)
2012
 
 
 
 
 
 
 
Operating revenues
$
1,367

 
$
1,996

 
$
879

 
$
1,236

Income (loss) from operations
$
295

 
$
705

 
$
(193
)
 
$
195

Net income (loss) attributable to Calpine
$
100

 
$
437

 
$
(329
)
 
$
(9
)
Net income (loss) per common share attributable to Calpine — Basic
$
0.22

 
$
0.95

 
$
(0.69
)
 
$
(0.02
)
Net income (loss) per common share attributable to Calpine — Diluted
$
0.22

 
$
0.94

 
$
(0.69
)
 
$
(0.02
)
 
 
 
 
 
 
 
 
2011
 
 
 
 
 
 
 
Operating revenues
$
1,459

 
$
2,209

 
$
1,633

 
$
1,499

Income from operations
$
196

 
$
403

 
$
183

 
$
18

Net income (loss) attributable to Calpine
$
(13
)
 
$
190

 
$
(70
)
 
$
(297
)
Net income (loss) per common share attributable to Calpine — Basic
$
(0.03
)
 
$
0.39

 
$
(0.14
)
 
$
(0.61
)
Net income (loss) per common share attributable to Calpine — Diluted
$
(0.03
)
 
$
0.39

 
$
(0.14
)
 
$
(0.61
)