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Selected Consolidated Quarterly Financial Data (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2016
Components Of Selected Consolidated Quarterly Financial Data
All “per share” references refer to earnings per diluted share. Summation of the individual quarters may not equal annual totals due to rounding. Refer to Note 19 for additional information on discontinued operations.
 
2016
 
2015
 
March 31
 
June 30
 
Sep. 30
 
Dec. 31
 
March 31
 
June 30
 
Sep. 30
 
Dec. 31
 
(in millions, except per share data)
Operating revenues

$843.8

 

$754.6

 

$924.6

 

$797.0

 

$897.4

 

$717.2

 

$898.9

 

$740.1

Operating income
145.9

 
128.6

 
162.6

 
99.9

 
152.9

 
109.0

 
235.9

 
79.2

Amounts attributable to Alliant Energy common shareowners:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income from continuing operations, net of tax
97.6

 
84.4

 
128.8

 
63.0

 
96.6

 
68.9

 
180.0

 
35.2

Loss from discontinued operations, net of tax
(1.1
)
 
(0.5
)
 
(0.4
)
 
(0.3
)
 

 
(1.3
)
 
(0.1
)
 
(1.1
)
Net income
96.5

 
83.9

 
128.4

 
62.7

 
96.6

 
67.6

 
179.9

 
34.1

Earnings per weighted average common share attributable to Alliant Energy common shareowners (a):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income from continuing operations, net of tax
0.43

 
0.37

 
0.57

 
0.28

 
0.43

 
0.31

 
0.79

 
0.16

Loss from discontinued operations, net of tax

 

 

 

 

 
(0.01
)
 

 
(0.01
)
Net income
0.43

 
0.37

 
0.57

 
0.28

 
0.43

 
0.30

 
0.79

 
0.15



(a)
Amounts reflect the effects of a two-for-one common stock split distributed in May 2016. Refer to Note 7 for additional details.
IPL [Member]  
Components Of Selected Consolidated Quarterly Financial Data
Earnings per share data is not disclosed for IPL given Alliant Energy is the sole shareowner of all shares of IPL’s common stock outstanding during the periods presented.
 
2016
 
2015
 
March 31
 
June 30
 
Sep. 30
 
Dec. 31
 
March 31
 
June 30
 
Sep. 30
 
Dec. 31
 
(in millions)
Operating revenues

$458.7

 

$411.0

 

$516.2

 

$434.5

 

$489.0

 

$382.2

 

$504.6

 

$398.7

Operating income
62.0

 
48.0

 
125.9

 
34.9

 
65.5

 
33.8

 
117.0

 
25.6

Net income
48.2

 
34.4

 
116.7

 
26.5

 
50.1

 
19.0

 
119.1

 
8.0

Earnings available for common stock
45.6

 
31.9

 
114.1

 
24.0

 
47.5

 
16.5

 
116.5

 
5.5

WPL [Member]  
Components Of Selected Consolidated Quarterly Financial Data
Earnings per share data is not disclosed for WPL given Alliant Energy is the sole shareowner of all shares of WPL’s common stock outstanding during the periods presented.
 
2016
 
2015
 
March 31
 
June 30
 
Sep. 30
 
Dec. 31
 
March 31
 
June 30
 
Sep. 30
 
Dec. 31
 
(in millions)
Operating revenues

$375.6

 

$334.3

 

$397.0

 

$352.2

 

$397.1

 

$324.7

 

$382.6

 

$330.7

Operating income
78.8

 
75.0

 
115.0

 
58.2

 
80.8

 
68.3

 
110.3

 
49.3

Net income
47.0

 
43.7

 
69.6

 
32.5

 
45.1

 
39.7

 
68.4

 
24.4

Earnings available for common stock
46.5

 
43.2

 
69.0

 
31.7

 
44.9

 
39.2

 
68.0

 
24.2