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Filing Detail
Form 8-K - Current report:
SEC Accession No. 0000352541-21-000103
Filing Date
2021-12-21
Accepted
2021-12-20 20:32:57
Documents
15
Period of Report
2021-12-17
Items
Item 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
Item 5.03: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K lnt-20211217.htm   iXBRL 8-K 61084
2 EX-3.1 lnt121720218-kex31.htm EX-3.1 15377
3 EX-4.1 lnt121720218-kex41.htm EX-4.1 903173
  Complete submission text file 0000352541-21-000103.txt   1362256

Data Files

Seq Description Document Type Size
4 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT lnt-20211217.xsd EX-101.SCH 2997
5 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT lnt-20211217_def.xml EX-101.DEF 20137
6 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT lnt-20211217_lab.xml EX-101.LAB 36974
7 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT lnt-20211217_pre.xml EX-101.PRE 19688
9 EXTRACTED XBRL INSTANCE DOCUMENT lnt-20211217_htm.xml XML 23517
Mailing Address 200 FIRST ST SE ALLIANT ENERGY TOWER CEDAR RAPIDS IA 52401
Business Address 200 FIRST ST SE ALLIANT ENERGY TOWER CEDAR RAPIDS IA 52401 3193984411
INTERSTATE POWER & LIGHT CO (Filer) CIK: 0000052485 (see all company filings)

IRS No.: 420331370 | State of Incorp.: IA | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 001-04117 | Film No.: 211506619
SIC: 4931 Electric & Other Services Combined

Mailing Address 4902 N BILTMORE LANE SUITE 1000 MADISON WI 53718-2148
Business Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148 608-458-3311
WISCONSIN POWER & LIGHT CO (Filer) CIK: 0000107832 (see all company filings)

IRS No.: 390714890 | State of Incorp.: WI | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 000-00337 | Film No.: 211506618
SIC: 4931 Electric & Other Services Combined

Mailing Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148
Business Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148 608-458-3311
ALLIANT ENERGY CORP (Filer) CIK: 0000352541 (see all company filings)

IRS No.: 391380265 | State of Incorp.: WI | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 001-09894 | Film No.: 211506617
SIC: 4931 Electric & Other Services Combined