Revenues

3 Months Ended

Mar. 31, 2022

Disaggregation of Revenue [Line Items]

Revenues from Contracts with Customers

REVENUES

Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):

	Alliant Energy		IPL		WPL
Three Months Ended March 31	2022	2021	2022	2021	2022	2021
Electric Utility:
Retail - residential	$293	$262	$150	$139	$143	$123
Retail - commercial	188	172	118	110	70	62
Retail - industrial	211	202	111	112	100	90
Wholesale	47	40	15	11	32	29
Bulk power and other	34	25	6	14	28	11
Total Electric Utility	773	701	400	386	373	315
Gas Utility:
Retail - residential	158	99	85	52	73	47
Retail - commercial	82	53	40	27	42	26
Retail - industrial	8	5	5	3	3	2
Transportation/other	14	13	9	9	5	4
Total Gas Utility	262	170	139	91	123	79
Other Utility:
Steam	9	9	9	9	—	—
Other utility	2	4	2	3	—	1
Total Other Utility	11	13	11	12	—	1
Non-Utility and Other:
Travero and other	22	17	—	—	—	—
Total Non-Utility and Other	22	17	—	—	—	—
Total revenues	$1,068	$901	$550	$489	$496	$395

IPL [Member]

Disaggregation of Revenue [Line Items]

Revenues from Contracts with Customers

REVENUES

Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):

	Alliant Energy		IPL		WPL
Three Months Ended March 31	2022	2021	2022	2021	2022	2021
Electric Utility:
Retail - residential	$293	$262	$150	$139	$143	$123
Retail - commercial	188	172	118	110	70	62
Retail - industrial	211	202	111	112	100	90
Wholesale	47	40	15	11	32	29
Bulk power and other	34	25	6	14	28	11
Total Electric Utility	773	701	400	386	373	315
Gas Utility:
Retail - residential	158	99	85	52	73	47
Retail - commercial	82	53	40	27	42	26
Retail - industrial	8	5	5	3	3	2
Transportation/other	14	13	9	9	5	4
Total Gas Utility	262	170	139	91	123	79
Other Utility:
Steam	9	9	9	9	—	—
Other utility	2	4	2	3	—	1
Total Other Utility	11	13	11	12	—	1
Non-Utility and Other:
Travero and other	22	17	—	—	—	—
Total Non-Utility and Other	22	17	—	—	—	—
Total revenues	$1,068	$901	$550	$489	$496	$395

WPL [Member]

Disaggregation of Revenue [Line Items]

Revenues from Contracts with Customers

REVENUES

Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):

	Alliant Energy		IPL		WPL
Three Months Ended March 31	2022	2021	2022	2021	2022	2021
Electric Utility:
Retail - residential	$293	$262	$150	$139	$143	$123
Retail - commercial	188	172	118	110	70	62
Retail - industrial	211	202	111	112	100	90
Wholesale	47	40	15	11	32	29
Bulk power and other	34	25	6	14	28	11
Total Electric Utility	773	701	400	386	373	315
Gas Utility:
Retail - residential	158	99	85	52	73	47
Retail - commercial	82	53	40	27	42	26
Retail - industrial	8	5	5	3	3	2
Transportation/other	14	13	9	9	5	4
Total Gas Utility	262	170	139	91	123	79
Other Utility:
Steam	9	9	9	9	—	—
Other utility	2	4	2	3	—	1
Total Other Utility	11	13	11	12	—	1
Non-Utility and Other:
Travero and other	22	17	—	—	—	—
Total Non-Utility and Other	22	17	—	—	—	—
Total revenues	$1,068	$901	$550	$489	$496	$395