Document and Entity Information
Document and Entity Information Document | Nov. 16, 2021 |
Entity Information [Line Items] | |
Document Type | 8-K |
Document Period End Date | Nov. 16, 2021 |
Entity Registrant Name | ALLIANT ENERGY CORP |
Entity Central Index Key | 0000352541 |
Amendment Flag | false |
Entity Incorporation, State or Country Code | WI |
Entity Address, Address Line One | 4902 N. Biltmore Lane |
Entity Address, City or Town | Madison |
Entity Address, State or Province | WI |
Entity Address, Postal Zip Code | 53718 |
City Area Code | 608 |
Local Phone Number | 458-3311 |
Entity File Number | 1-9894 |
Entity Tax Identification Number | 39-1380265 |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |
Title of 12(b) Security | Common Stock, $0.01 Par Value |
Trading Symbol | LNT |
Security Exchange Name | NASDAQ |
Entity Emerging Growth Company | false |
IPL [Member] | |
Entity Information [Line Items] | |
Entity Registrant Name | INTERSTATE POWER & LIGHT CO |
Entity Central Index Key | 0000052485 |
Entity Incorporation, State or Country Code | IA |
Entity Address, Address Line One | Alliant Energy Tower |
Entity Address, City or Town | Cedar Rapids |
Entity Address, State or Province | IA |
Entity Address, Postal Zip Code | 52401 |
City Area Code | 319 |
Local Phone Number | 786-4411 |
Entity File Number | 1-4117 |
Entity Tax Identification Number | 42-0331370 |
Title of 12(b) Security | 5.100% Series D Cumulative Perpetual Preferred Stock, $0.01 Par Value |
Trading Symbol | IPLDP |
Security Exchange Name | NASDAQ |
Entity Emerging Growth Company | false |