Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available for sale securities, net of tax	$ 81	$ 283	$ (18)
Comprehensive Income	80,400us-gaap_ComprehensiveIncomeNetOfTax	75,188us-gaap_ComprehensiveIncomeNetOfTax	64,428us-gaap_ComprehensiveIncomeNetOfTax
MGE [Member]
Net Income	81,938	76,445	65,306
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available for sale securities, net of tax	(48)	188	(43)
Comprehensive Income Including Noncontrolling Interest	81,890	76,633	65,263
Less: Comprehensive Income Attributable to Noncontrolling Interest, net of tax	(26,310)	(27,438)	(24,489)
Comprehensive Income	$ 55,580	$ 49,195	$ 40,774

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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