Segments Of Business (Tables)

6 Months Ended

Jun. 30, 2022

Segment Reporting Information [Line Items]

Schedule Of Segments Of Business

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.

Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended June 30, 2022
Revenues	$812	$94	$13	$919	$24	$943
Operating income	195	8	1	204	8	212
Net income attributable to Alliant Energy common shareowners				150	9	159
Three Months Ended June 30, 2021
Revenues	$717	$69	$10	$796	$21	$817
Operating income (loss)	164	3	(1)	166	10	176
Net income attributable to Alliant Energy common shareowners				124	20	144

Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Six Months Ended June 30, 2022
Revenues	$1,586	$356	$23	$1,965	$47	$2,012
Operating income	376	65	4	445	15	460
Net income attributable to Alliant Energy common shareowners				329	22	351
Six Months Ended June 30, 2021
Revenues	$1,418	$239	$23	$1,680	$38	$1,718
Operating income	311	47	1	359	15	374
Net income attributable to Alliant Energy common shareowners				287	28	315

IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2022
Revenues	$442	$52	$12	$506
Operating income	104	4	1	109
Net income available for common stock				87
Three Months Ended June 30, 2021
Revenues	$402	$43	$10	$455
Operating income	107	3	1	111
Net income available for common stock				86
Six Months Ended June 30, 2022
Revenues	$843	$191	$22	$1,056
Operating income	179	36	3	218
Net income available for common stock				173
Six Months Ended June 30, 2021
Revenues	$788	$134	$22	$944
Operating income	179	33	2	214
Net income available for common stock				165

WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2022
Revenues	$370	$42	$1	$413
Operating income	91	4	—	95
Net income				63
Three Months Ended June 30, 2021
Revenues	$315	$26	$—	$341
Operating income (loss)	57	—	(2)	55
Net income				38
Six Months Ended June 30, 2022
Revenues	$743	$165	$1	$909
Operating income	197	29	1	227
Net income				156
Six Months Ended June 30, 2021
Revenues	$630	$105	$1	$736
Operating income (loss)	132	14	(1)	145
Net income				122

IPL [Member]

Segment Reporting Information [Line Items]

Schedule Of Segments Of Business

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.

Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended June 30, 2022
Revenues	$812	$94	$13	$919	$24	$943
Operating income	195	8	1	204	8	212
Net income attributable to Alliant Energy common shareowners				150	9	159
Three Months Ended June 30, 2021
Revenues	$717	$69	$10	$796	$21	$817
Operating income (loss)	164	3	(1)	166	10	176
Net income attributable to Alliant Energy common shareowners				124	20	144

Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Six Months Ended June 30, 2022
Revenues	$1,586	$356	$23	$1,965	$47	$2,012
Operating income	376	65	4	445	15	460
Net income attributable to Alliant Energy common shareowners				329	22	351
Six Months Ended June 30, 2021
Revenues	$1,418	$239	$23	$1,680	$38	$1,718
Operating income	311	47	1	359	15	374
Net income attributable to Alliant Energy common shareowners				287	28	315

IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2022
Revenues	$442	$52	$12	$506
Operating income	104	4	1	109
Net income available for common stock				87
Three Months Ended June 30, 2021
Revenues	$402	$43	$10	$455
Operating income	107	3	1	111
Net income available for common stock				86
Six Months Ended June 30, 2022
Revenues	$843	$191	$22	$1,056
Operating income	179	36	3	218
Net income available for common stock				173
Six Months Ended June 30, 2021
Revenues	$788	$134	$22	$944
Operating income	179	33	2	214
Net income available for common stock				165

WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2022
Revenues	$370	$42	$1	$413
Operating income	91	4	—	95
Net income				63
Three Months Ended June 30, 2021
Revenues	$315	$26	$—	$341
Operating income (loss)	57	—	(2)	55
Net income				38
Six Months Ended June 30, 2022
Revenues	$743	$165	$1	$909
Operating income	197	29	1	227
Net income				156
Six Months Ended June 30, 2021
Revenues	$630	$105	$1	$736
Operating income (loss)	132	14	(1)	145
Net income				122

WPL [Member]

Segment Reporting Information [Line Items]

Schedule Of Segments Of Business

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.

Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended June 30, 2022
Revenues	$812	$94	$13	$919	$24	$943
Operating income	195	8	1	204	8	212
Net income attributable to Alliant Energy common shareowners				150	9	159
Three Months Ended June 30, 2021
Revenues	$717	$69	$10	$796	$21	$817
Operating income (loss)	164	3	(1)	166	10	176
Net income attributable to Alliant Energy common shareowners				124	20	144

Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Six Months Ended June 30, 2022
Revenues	$1,586	$356	$23	$1,965	$47	$2,012
Operating income	376	65	4	445	15	460
Net income attributable to Alliant Energy common shareowners				329	22	351
Six Months Ended June 30, 2021
Revenues	$1,418	$239	$23	$1,680	$38	$1,718
Operating income	311	47	1	359	15	374
Net income attributable to Alliant Energy common shareowners				287	28	315

IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2022
Revenues	$442	$52	$12	$506
Operating income	104	4	1	109
Net income available for common stock				87
Three Months Ended June 30, 2021
Revenues	$402	$43	$10	$455
Operating income	107	3	1	111
Net income available for common stock				86
Six Months Ended June 30, 2022
Revenues	$843	$191	$22	$1,056
Operating income	179	36	3	218
Net income available for common stock				173
Six Months Ended June 30, 2021
Revenues	$788	$134	$22	$944
Operating income	179	33	2	214
Net income available for common stock				165

WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended June 30, 2022
Revenues	$370	$42	$1	$413
Operating income	91	4	—	95
Net income				63
Three Months Ended June 30, 2021
Revenues	$315	$26	$—	$341
Operating income (loss)	57	—	(2)	55
Net income				38
Six Months Ended June 30, 2022
Revenues	$743	$165	$1	$909
Operating income	197	29	1	227
Net income				156
Six Months Ended June 30, 2021
Revenues	$630	$105	$1	$736
Operating income (loss)	132	14	(1)	145
Net income				122