ALLIANT ENERGY CORP

Net Periodic Benefit Costs, by Plan [Roll Up]

Text Block Representation, CLICK to open in XBRL Cloud Viewer, (scroll down to appropriate text block) Detail Representation, CLICK to open in XBRL Cloud Viewer
Text block: us-gaap:ScheduleOfNetBenefitCostsTableTextBlock Detail: us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost