Preferred Stock	9 Months Ended
	Sep. 30, 2021
Preferred Stock	PREFERRED STOCKIn November 2021, IPL announced it will redeem all 8,000,000 outstanding shares of its 5.1% cumulative preferred stock in December 2021 at par value for approximately $200 million plus accrued and unpaid dividends up to the redemption date.
IPL [Member]
Preferred Stock	PREFERRED STOCKIn November 2021, IPL announced it will redeem all 8,000,000 outstanding shares of its 5.1% cumulative preferred stock in December 2021 at par value for approximately $200 million plus accrued and unpaid dividends up to the redemption date.