XML 58 R25.htm IDEA: XBRL DOCUMENT v3.10.0.1
Segments Of Business
12 Months Ended
Dec. 31, 2018
Segment Reporting Information [Line Items]  
Segments Of Business
SEGMENTS OF BUSINESS
Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2018 are:
Utility - includes the operations of IPL and WPL, which primarily serve retail customers in Iowa and Wisconsin. The utility business has three reportable segments: a) utility electric operations; b) utility gas operations; and c) utility other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total Utility.”
ATC Holdings, Non-utility, Parent and Other - includes the operations of AEF and its subsidiaries, Corporate Services, the Alliant Energy parent company, and any Alliant Energy parent company consolidating adjustments. AEF is comprised of Alliant Energy’s interest in ATC Holdings, Transportation, a non-utility wind farm, the Sheboygan Falls Energy Facility and other non-utility holdings.

Alliant Energy’s administrative support services are directly charged to the applicable segment where practicable. In all other cases, administrative support services are allocated to the applicable segment based on services agreements. Intersegment revenues were not material to Alliant Energy’s operations and there was no single customer whose revenues were 10% or more of Alliant Energy’s consolidated revenues. All of Alliant Energy’s operations and assets are located in the U.S. Certain financial information relating to Alliant Energy’s business segments, which represent the services provided to its customers, was as follows (in millions):
 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2018
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$3,000.3

 

$446.6

 

$48.0

 

$3,494.9

 

$39.6

 

$3,534.5

Depreciation and amortization
457.3

 
42.0

 
3.6

 
502.9

 
4.0

 
506.9

Operating income
610.2

 
53.2

 
0.3

 
663.7

 
30.7

 
694.4

Interest expense
 
 
 
 
 
 
217.2

 
29.8

 
247.0

Equity income from unconsolidated investments, net
(0.9
)
 

 

 
(0.9
)
 
(53.7
)
 
(54.6
)
Income taxes
 
 
 
 
 
 
33.0

 
14.7

 
47.7

Net income attributable to Alliant Energy common shareowners
 
 
 
 
 
 
472.1

 
40.0

 
512.1

Total assets
12,486.3

 
1,184.4

 
893.2

 
14,563.9

 
862.1

 
15,426.0

Investments in equity method subsidiaries
8.1

 

 

 
8.1

 
413.2

 
421.3

Construction and acquisition expenditures
1,421.1

 
146.8

 
0.4

 
1,568.3

 
65.6

 
1,633.9

 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2017
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$2,894.7

 

$400.9

 

$47.5

 

$3,343.1

 

$39.1

 

$3,382.2

Depreciation and amortization
412.0

 
38.2

 
7.7

 
457.9

 
3.9

 
461.8

Operating income (loss)
601.7

 
47.7

 
(11.6
)
 
637.8

 
33.4

 
671.2

Interest expense
 
 
 
 
 
 
206.2

 
9.4

 
215.6

Equity income from unconsolidated investments, net
(0.7
)
 

 

 
(0.7
)
 
(44.1
)
 
(44.8
)
Income taxes
 
 
 
 
 
 
51.0

 
15.7

 
66.7

Net income attributable to Alliant Energy common shareowners
 
 
 
 
 
 
403.4

 
53.9

 
457.3

Total assets
11,396.2

 
1,199.8

 
766.5

 
13,362.5

 
825.3

 
14,187.8

Investments in equity method subsidiaries
8.3

 

 

 
8.3

 
373.1

 
381.4

Construction and acquisition expenditures
1,154.9

 
125.2

 
1.7

 
1,281.8

 
185.1

 
1,466.9

 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2016
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$2,875.5

 

$355.4

 

$48.6

 

$3,279.5

 

$40.5

 

$3,320.0

Depreciation and amortization
367.0

 
34.2

 
2.1

 
403.3

 
8.3

 
411.6

Operating income (loss)
586.5

 
33.0

 
(4.7
)
 
614.8

 
(60.7
)
 
554.1

Interest expense
 
 
 
 
 
 
194.6

 
1.6

 
196.2

Equity income from unconsolidated investments, net
(0.7
)
 

 

 
(0.7
)
 
(38.9
)
 
(39.6
)
Income tax expense (benefit)
 
 
 
 
 
 
71.4

 
(12.0
)
 
59.4

Net income (loss) attributable to Alliant Energy common shareowners
 
 
 
 
 
 
385.2

 
(13.7
)
 
371.5

Total assets
10,722.9

 
1,091.1

 
781.0

 
12,595.0

 
778.8

 
13,373.8

Investments in equity method subsidiaries
7.7

 

 

 
7.7

 
318.3

 
326.0

Construction and acquisition expenditures
994.0

 
137.1

 
0.1

 
1,131.2

 
65.6

 
1,196.8



IPL - IPL is a utility primarily serving retail customers in Iowa and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to IPL’s operations and there was no single customer whose revenues were 10% or more of IPL’s consolidated revenues. All of IPL’s operations and assets are located in the U.S. Certain financial information relating to IPL’s business segments, which represent the services provided to its customers, was as follows (in millions):
2018
Electric
 
Gas
 
Other
 
Total
Revenues

$1,731.1

 

$266.2

 

$45.0

 

$2,042.3

Depreciation and amortization
254.7

 
25.2

 
3.6

 
283.5

Operating income
318.2

 
28.3

 
4.3

 
350.8

Interest expense
 
 
 
 
 
 
119.4

Income tax benefit
 
 
 
 
 
 
(3.2
)
Earnings available for common stock
 
 
 
 
 
 
264.0

Total assets
7,219.9

 
687.5

 
504.0

 
8,411.4

Construction and acquisition expenditures
890.6

 
99.7

 
0.4

 
990.7

2017
Electric
 
Gas
 
Other
 
Total
Revenues

$1,598.9

 

$226.0

 

$45.4

 

$1,870.3

Depreciation and amortization
215.1

 
22.2

 
7.7

 
245.0

Operating income (loss)
287.3

 
21.7

 
(4.9
)
 
304.1

Interest expense
 
 
 
 
 
 
112.4

Income tax benefit
 
 
 
 
 
 
(10.9
)
Earnings available for common stock
 
 
 
 
 
 
216.8

Total assets
6,524.4

 
727.9

 
353.7

 
7,606.0

Construction and acquisition expenditures
594.1

 
80.7

 
1.2

 
676.0

2016
Electric
 
Gas
 
Other
 
Total
Revenues

$1,569.7

 

$204.0

 

$46.7

 

$1,820.4

Depreciation and amortization
189.4

 
19.3

 
2.1

 
210.8

Operating income
257.8

 
16.4

 
3.4

 
277.6

Interest expense
 
 
 
 
 
 
103.2

Income tax benefit
 
 
 
 
 
 
(5.9
)
Earnings available for common stock
 
 
 
 
 
 
215.6

Total assets
6,278.2

 
653.3

 
373.2

 
7,304.7

Construction and acquisition expenditures
598.1

 
91.5

 
0.1

 
689.7



WPL - WPL is a utility serving customers in Wisconsin and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes WPL’s interest in ATC in 2016, and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to WPL’s operations and there was no single customer whose revenues were 10% or more of WPL’s consolidated revenues. All of WPL’s operations and assets are located in the U.S. Certain financial information relating to WPL’s business segments, which represent the services provided to its customers, was as follows (in millions):
2018
Electric
 
Gas
 
Other
 
Total
Revenues

$1,269.2

 

$180.4

 

$3.0

 

$1,452.6

Depreciation and amortization
202.6

 
16.8

 

 
219.4

Operating income (loss)
292.0

 
24.9

 
(4.0
)
 
312.9

Interest expense
 
 
 
 
 
 
97.8

Income taxes
 
 
 
 
 
 
36.2

Earnings available for common stock
 
 
 
 
 
 
208.1

Total assets
5,266.4

 
496.9

 
389.2

 
6,152.5

Construction and acquisition expenditures
530.5

 
47.1

 

 
577.6

2017
Electric
 
Gas
 
Other
 
Total
Revenues

$1,295.8

 

$174.9

 

$2.1

 

$1,472.8

Depreciation and amortization
196.9

 
16.0

 

 
212.9

Operating income (loss)
314.4

 
26.0

 
(6.7
)
 
333.7

Interest expense
 
 
 
 
 
 
93.8

Income taxes
 
 
 
 
 
 
61.9

Earnings available for common stock
 
 
 
 
 
 
186.6

Total assets
4,871.8

 
471.9

 
412.8

 
5,756.5

Construction and acquisition expenditures
592.4

 
44.5

 
0.5

 
637.4

2016
Electric
 
Gas
 
Other
 
Total
Revenues

$1,305.8

 

$151.4

 

$1.9

 

$1,459.1

Depreciation and amortization
177.6

 
14.9

 

 
192.5

Operating income (loss)
328.7

 
16.6

 
(8.1
)
 
337.2

Interest expense
 
 
 
 
 
 
91.4

Equity income from unconsolidated investments
(0.7
)
 

 
(39.1
)
 
(39.8
)
Income taxes
 
 
 
 
 
 
93.3

Earnings available for common stock
 
 
 
 
 
 
190.4

Total assets
4,444.7

 
437.8

 
407.8

 
5,290.3

Construction and acquisition expenditures
395.9

 
45.6

 
11.5

 
453.0

IPL [Member]  
Segment Reporting Information [Line Items]  
Segments Of Business
SEGMENTS OF BUSINESS
Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2018 are:
Utility - includes the operations of IPL and WPL, which primarily serve retail customers in Iowa and Wisconsin. The utility business has three reportable segments: a) utility electric operations; b) utility gas operations; and c) utility other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total Utility.”
ATC Holdings, Non-utility, Parent and Other - includes the operations of AEF and its subsidiaries, Corporate Services, the Alliant Energy parent company, and any Alliant Energy parent company consolidating adjustments. AEF is comprised of Alliant Energy’s interest in ATC Holdings, Transportation, a non-utility wind farm, the Sheboygan Falls Energy Facility and other non-utility holdings.

Alliant Energy’s administrative support services are directly charged to the applicable segment where practicable. In all other cases, administrative support services are allocated to the applicable segment based on services agreements. Intersegment revenues were not material to Alliant Energy’s operations and there was no single customer whose revenues were 10% or more of Alliant Energy’s consolidated revenues. All of Alliant Energy’s operations and assets are located in the U.S. Certain financial information relating to Alliant Energy’s business segments, which represent the services provided to its customers, was as follows (in millions):
 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2018
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$3,000.3

 

$446.6

 

$48.0

 

$3,494.9

 

$39.6

 

$3,534.5

Depreciation and amortization
457.3

 
42.0

 
3.6

 
502.9

 
4.0

 
506.9

Operating income
610.2

 
53.2

 
0.3

 
663.7

 
30.7

 
694.4

Interest expense
 
 
 
 
 
 
217.2

 
29.8

 
247.0

Equity income from unconsolidated investments, net
(0.9
)
 

 

 
(0.9
)
 
(53.7
)
 
(54.6
)
Income taxes
 
 
 
 
 
 
33.0

 
14.7

 
47.7

Net income attributable to Alliant Energy common shareowners
 
 
 
 
 
 
472.1

 
40.0

 
512.1

Total assets
12,486.3

 
1,184.4

 
893.2

 
14,563.9

 
862.1

 
15,426.0

Investments in equity method subsidiaries
8.1

 

 

 
8.1

 
413.2

 
421.3

Construction and acquisition expenditures
1,421.1

 
146.8

 
0.4

 
1,568.3

 
65.6

 
1,633.9

 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2017
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$2,894.7

 

$400.9

 

$47.5

 

$3,343.1

 

$39.1

 

$3,382.2

Depreciation and amortization
412.0

 
38.2

 
7.7

 
457.9

 
3.9

 
461.8

Operating income (loss)
601.7

 
47.7

 
(11.6
)
 
637.8

 
33.4

 
671.2

Interest expense
 
 
 
 
 
 
206.2

 
9.4

 
215.6

Equity income from unconsolidated investments, net
(0.7
)
 

 

 
(0.7
)
 
(44.1
)
 
(44.8
)
Income taxes
 
 
 
 
 
 
51.0

 
15.7

 
66.7

Net income attributable to Alliant Energy common shareowners
 
 
 
 
 
 
403.4

 
53.9

 
457.3

Total assets
11,396.2

 
1,199.8

 
766.5

 
13,362.5

 
825.3

 
14,187.8

Investments in equity method subsidiaries
8.3

 

 

 
8.3

 
373.1

 
381.4

Construction and acquisition expenditures
1,154.9

 
125.2

 
1.7

 
1,281.8

 
185.1

 
1,466.9

 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2016
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$2,875.5

 

$355.4

 

$48.6

 

$3,279.5

 

$40.5

 

$3,320.0

Depreciation and amortization
367.0

 
34.2

 
2.1

 
403.3

 
8.3

 
411.6

Operating income (loss)
586.5

 
33.0

 
(4.7
)
 
614.8

 
(60.7
)
 
554.1

Interest expense
 
 
 
 
 
 
194.6

 
1.6

 
196.2

Equity income from unconsolidated investments, net
(0.7
)
 

 

 
(0.7
)
 
(38.9
)
 
(39.6
)
Income tax expense (benefit)
 
 
 
 
 
 
71.4

 
(12.0
)
 
59.4

Net income (loss) attributable to Alliant Energy common shareowners
 
 
 
 
 
 
385.2

 
(13.7
)
 
371.5

Total assets
10,722.9

 
1,091.1

 
781.0

 
12,595.0

 
778.8

 
13,373.8

Investments in equity method subsidiaries
7.7

 

 

 
7.7

 
318.3

 
326.0

Construction and acquisition expenditures
994.0

 
137.1

 
0.1

 
1,131.2

 
65.6

 
1,196.8



IPL - IPL is a utility primarily serving retail customers in Iowa and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to IPL’s operations and there was no single customer whose revenues were 10% or more of IPL’s consolidated revenues. All of IPL’s operations and assets are located in the U.S. Certain financial information relating to IPL’s business segments, which represent the services provided to its customers, was as follows (in millions):
2018
Electric
 
Gas
 
Other
 
Total
Revenues

$1,731.1

 

$266.2

 

$45.0

 

$2,042.3

Depreciation and amortization
254.7

 
25.2

 
3.6

 
283.5

Operating income
318.2

 
28.3

 
4.3

 
350.8

Interest expense
 
 
 
 
 
 
119.4

Income tax benefit
 
 
 
 
 
 
(3.2
)
Earnings available for common stock
 
 
 
 
 
 
264.0

Total assets
7,219.9

 
687.5

 
504.0

 
8,411.4

Construction and acquisition expenditures
890.6

 
99.7

 
0.4

 
990.7

2017
Electric
 
Gas
 
Other
 
Total
Revenues

$1,598.9

 

$226.0

 

$45.4

 

$1,870.3

Depreciation and amortization
215.1

 
22.2

 
7.7

 
245.0

Operating income (loss)
287.3

 
21.7

 
(4.9
)
 
304.1

Interest expense
 
 
 
 
 
 
112.4

Income tax benefit
 
 
 
 
 
 
(10.9
)
Earnings available for common stock
 
 
 
 
 
 
216.8

Total assets
6,524.4

 
727.9

 
353.7

 
7,606.0

Construction and acquisition expenditures
594.1

 
80.7

 
1.2

 
676.0

2016
Electric
 
Gas
 
Other
 
Total
Revenues

$1,569.7

 

$204.0

 

$46.7

 

$1,820.4

Depreciation and amortization
189.4

 
19.3

 
2.1

 
210.8

Operating income
257.8

 
16.4

 
3.4

 
277.6

Interest expense
 
 
 
 
 
 
103.2

Income tax benefit
 
 
 
 
 
 
(5.9
)
Earnings available for common stock
 
 
 
 
 
 
215.6

Total assets
6,278.2

 
653.3

 
373.2

 
7,304.7

Construction and acquisition expenditures
598.1

 
91.5

 
0.1

 
689.7



WPL - WPL is a utility serving customers in Wisconsin and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes WPL’s interest in ATC in 2016, and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to WPL’s operations and there was no single customer whose revenues were 10% or more of WPL’s consolidated revenues. All of WPL’s operations and assets are located in the U.S. Certain financial information relating to WPL’s business segments, which represent the services provided to its customers, was as follows (in millions):
2018
Electric
 
Gas
 
Other
 
Total
Revenues

$1,269.2

 

$180.4

 

$3.0

 

$1,452.6

Depreciation and amortization
202.6

 
16.8

 

 
219.4

Operating income (loss)
292.0

 
24.9

 
(4.0
)
 
312.9

Interest expense
 
 
 
 
 
 
97.8

Income taxes
 
 
 
 
 
 
36.2

Earnings available for common stock
 
 
 
 
 
 
208.1

Total assets
5,266.4

 
496.9

 
389.2

 
6,152.5

Construction and acquisition expenditures
530.5

 
47.1

 

 
577.6

2017
Electric
 
Gas
 
Other
 
Total
Revenues

$1,295.8

 

$174.9

 

$2.1

 

$1,472.8

Depreciation and amortization
196.9

 
16.0

 

 
212.9

Operating income (loss)
314.4

 
26.0

 
(6.7
)
 
333.7

Interest expense
 
 
 
 
 
 
93.8

Income taxes
 
 
 
 
 
 
61.9

Earnings available for common stock
 
 
 
 
 
 
186.6

Total assets
4,871.8

 
471.9

 
412.8

 
5,756.5

Construction and acquisition expenditures
592.4

 
44.5

 
0.5

 
637.4

2016
Electric
 
Gas
 
Other
 
Total
Revenues

$1,305.8

 

$151.4

 

$1.9

 

$1,459.1

Depreciation and amortization
177.6

 
14.9

 

 
192.5

Operating income (loss)
328.7

 
16.6

 
(8.1
)
 
337.2

Interest expense
 
 
 
 
 
 
91.4

Equity income from unconsolidated investments
(0.7
)
 

 
(39.1
)
 
(39.8
)
Income taxes
 
 
 
 
 
 
93.3

Earnings available for common stock
 
 
 
 
 
 
190.4

Total assets
4,444.7

 
437.8

 
407.8

 
5,290.3

Construction and acquisition expenditures
395.9

 
45.6

 
11.5

 
453.0

WPL [Member]  
Segment Reporting Information [Line Items]  
Segments Of Business
SEGMENTS OF BUSINESS
Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2018 are:
Utility - includes the operations of IPL and WPL, which primarily serve retail customers in Iowa and Wisconsin. The utility business has three reportable segments: a) utility electric operations; b) utility gas operations; and c) utility other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total Utility.”
ATC Holdings, Non-utility, Parent and Other - includes the operations of AEF and its subsidiaries, Corporate Services, the Alliant Energy parent company, and any Alliant Energy parent company consolidating adjustments. AEF is comprised of Alliant Energy’s interest in ATC Holdings, Transportation, a non-utility wind farm, the Sheboygan Falls Energy Facility and other non-utility holdings.

Alliant Energy’s administrative support services are directly charged to the applicable segment where practicable. In all other cases, administrative support services are allocated to the applicable segment based on services agreements. Intersegment revenues were not material to Alliant Energy’s operations and there was no single customer whose revenues were 10% or more of Alliant Energy’s consolidated revenues. All of Alliant Energy’s operations and assets are located in the U.S. Certain financial information relating to Alliant Energy’s business segments, which represent the services provided to its customers, was as follows (in millions):
 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2018
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$3,000.3

 

$446.6

 

$48.0

 

$3,494.9

 

$39.6

 

$3,534.5

Depreciation and amortization
457.3

 
42.0

 
3.6

 
502.9

 
4.0

 
506.9

Operating income
610.2

 
53.2

 
0.3

 
663.7

 
30.7

 
694.4

Interest expense
 
 
 
 
 
 
217.2

 
29.8

 
247.0

Equity income from unconsolidated investments, net
(0.9
)
 

 

 
(0.9
)
 
(53.7
)
 
(54.6
)
Income taxes
 
 
 
 
 
 
33.0

 
14.7

 
47.7

Net income attributable to Alliant Energy common shareowners
 
 
 
 
 
 
472.1

 
40.0

 
512.1

Total assets
12,486.3

 
1,184.4

 
893.2

 
14,563.9

 
862.1

 
15,426.0

Investments in equity method subsidiaries
8.1

 

 

 
8.1

 
413.2

 
421.3

Construction and acquisition expenditures
1,421.1

 
146.8

 
0.4

 
1,568.3

 
65.6

 
1,633.9

 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2017
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$2,894.7

 

$400.9

 

$47.5

 

$3,343.1

 

$39.1

 

$3,382.2

Depreciation and amortization
412.0

 
38.2

 
7.7

 
457.9

 
3.9

 
461.8

Operating income (loss)
601.7

 
47.7

 
(11.6
)
 
637.8

 
33.4

 
671.2

Interest expense
 
 
 
 
 
 
206.2

 
9.4

 
215.6

Equity income from unconsolidated investments, net
(0.7
)
 

 

 
(0.7
)
 
(44.1
)
 
(44.8
)
Income taxes
 
 
 
 
 
 
51.0

 
15.7

 
66.7

Net income attributable to Alliant Energy common shareowners
 
 
 
 
 
 
403.4

 
53.9

 
457.3

Total assets
11,396.2

 
1,199.8

 
766.5

 
13,362.5

 
825.3

 
14,187.8

Investments in equity method subsidiaries
8.3

 

 

 
8.3

 
373.1

 
381.4

Construction and acquisition expenditures
1,154.9

 
125.2

 
1.7

 
1,281.8

 
185.1

 
1,466.9

 
 
 
 
 
 
 
 
 
ATC Holdings,
 
 
 
Utility
 
Non-utility,
 
Alliant Energy
2016
Electric
 
Gas
 
Other
 
Total
 
Parent and Other
 
Consolidated
Revenues

$2,875.5

 

$355.4

 

$48.6

 

$3,279.5

 

$40.5

 

$3,320.0

Depreciation and amortization
367.0

 
34.2

 
2.1

 
403.3

 
8.3

 
411.6

Operating income (loss)
586.5

 
33.0

 
(4.7
)
 
614.8

 
(60.7
)
 
554.1

Interest expense
 
 
 
 
 
 
194.6

 
1.6

 
196.2

Equity income from unconsolidated investments, net
(0.7
)
 

 

 
(0.7
)
 
(38.9
)
 
(39.6
)
Income tax expense (benefit)
 
 
 
 
 
 
71.4

 
(12.0
)
 
59.4

Net income (loss) attributable to Alliant Energy common shareowners
 
 
 
 
 
 
385.2

 
(13.7
)
 
371.5

Total assets
10,722.9

 
1,091.1

 
781.0

 
12,595.0

 
778.8

 
13,373.8

Investments in equity method subsidiaries
7.7

 

 

 
7.7

 
318.3

 
326.0

Construction and acquisition expenditures
994.0

 
137.1

 
0.1

 
1,131.2

 
65.6

 
1,196.8



IPL - IPL is a utility primarily serving retail customers in Iowa and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to IPL’s operations and there was no single customer whose revenues were 10% or more of IPL’s consolidated revenues. All of IPL’s operations and assets are located in the U.S. Certain financial information relating to IPL’s business segments, which represent the services provided to its customers, was as follows (in millions):
2018
Electric
 
Gas
 
Other
 
Total
Revenues

$1,731.1

 

$266.2

 

$45.0

 

$2,042.3

Depreciation and amortization
254.7

 
25.2

 
3.6

 
283.5

Operating income
318.2

 
28.3

 
4.3

 
350.8

Interest expense
 
 
 
 
 
 
119.4

Income tax benefit
 
 
 
 
 
 
(3.2
)
Earnings available for common stock
 
 
 
 
 
 
264.0

Total assets
7,219.9

 
687.5

 
504.0

 
8,411.4

Construction and acquisition expenditures
890.6

 
99.7

 
0.4

 
990.7

2017
Electric
 
Gas
 
Other
 
Total
Revenues

$1,598.9

 

$226.0

 

$45.4

 

$1,870.3

Depreciation and amortization
215.1

 
22.2

 
7.7

 
245.0

Operating income (loss)
287.3

 
21.7

 
(4.9
)
 
304.1

Interest expense
 
 
 
 
 
 
112.4

Income tax benefit
 
 
 
 
 
 
(10.9
)
Earnings available for common stock
 
 
 
 
 
 
216.8

Total assets
6,524.4

 
727.9

 
353.7

 
7,606.0

Construction and acquisition expenditures
594.1

 
80.7

 
1.2

 
676.0

2016
Electric
 
Gas
 
Other
 
Total
Revenues

$1,569.7

 

$204.0

 

$46.7

 

$1,820.4

Depreciation and amortization
189.4

 
19.3

 
2.1

 
210.8

Operating income
257.8

 
16.4

 
3.4

 
277.6

Interest expense
 
 
 
 
 
 
103.2

Income tax benefit
 
 
 
 
 
 
(5.9
)
Earnings available for common stock
 
 
 
 
 
 
215.6

Total assets
6,278.2

 
653.3

 
373.2

 
7,304.7

Construction and acquisition expenditures
598.1

 
91.5

 
0.1

 
689.7



WPL - WPL is a utility serving customers in Wisconsin and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes WPL’s interest in ATC in 2016, and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to WPL’s operations and there was no single customer whose revenues were 10% or more of WPL’s consolidated revenues. All of WPL’s operations and assets are located in the U.S. Certain financial information relating to WPL’s business segments, which represent the services provided to its customers, was as follows (in millions):
2018
Electric
 
Gas
 
Other
 
Total
Revenues

$1,269.2

 

$180.4

 

$3.0

 

$1,452.6

Depreciation and amortization
202.6

 
16.8

 

 
219.4

Operating income (loss)
292.0

 
24.9

 
(4.0
)
 
312.9

Interest expense
 
 
 
 
 
 
97.8

Income taxes
 
 
 
 
 
 
36.2

Earnings available for common stock
 
 
 
 
 
 
208.1

Total assets
5,266.4

 
496.9

 
389.2

 
6,152.5

Construction and acquisition expenditures
530.5

 
47.1

 

 
577.6

2017
Electric
 
Gas
 
Other
 
Total
Revenues

$1,295.8

 

$174.9

 

$2.1

 

$1,472.8

Depreciation and amortization
196.9

 
16.0

 

 
212.9

Operating income (loss)
314.4

 
26.0

 
(6.7
)
 
333.7

Interest expense
 
 
 
 
 
 
93.8

Income taxes
 
 
 
 
 
 
61.9

Earnings available for common stock
 
 
 
 
 
 
186.6

Total assets
4,871.8

 
471.9

 
412.8

 
5,756.5

Construction and acquisition expenditures
592.4

 
44.5

 
0.5

 
637.4

2016
Electric
 
Gas
 
Other
 
Total
Revenues

$1,305.8

 

$151.4

 

$1.9

 

$1,459.1

Depreciation and amortization
177.6

 
14.9

 

 
192.5

Operating income (loss)
328.7

 
16.6

 
(8.1
)
 
337.2

Interest expense
 
 
 
 
 
 
91.4

Equity income from unconsolidated investments
(0.7
)
 

 
(39.1
)
 
(39.8
)
Income taxes
 
 
 
 
 
 
93.3

Earnings available for common stock
 
 
 
 
 
 
190.4

Total assets
4,444.7

 
437.8

 
407.8

 
5,290.3

Construction and acquisition expenditures
395.9

 
45.6

 
11.5

 
453.0