Long-Term Debt (Details Textuals) $ / shares in Units, shares in Millions			1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 01, 2020 $ / shares	Nov. 01, 2019 USD ($) $ / shares	Jul. 31, 2021 day $ / shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 30, 2022 shares
Debt Instrument [Line Items]
Face amount					$ 4,535,000,000
Redemption of long-term debt				$ 2,600,000,000	3,522,000,000	$ 882,000,000	$ 821,000,000
Prepayment costs for extinguishment of long-term debt					$ 361,000,000	0	0
Equity units, face amount of attached debt instrument		$ 1,000
Financial instruments subject to mandatory redemption, settlement terms, share value, amount							150,000,000
Senior Notes
Debt Instrument [Line Items]
Redemption of long-term debt				2,600,000,000
Prepayment costs for extinguishment of long-term debt				361,000,000
Write off of unamortized issuance costs and discounts				$ 15,000,000
Equity units subject to mandatory redemption
Debt Instrument [Line Items]
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares	$ 50	$ 50
Equity units, percentage interest in attached debt instrument		0.005%
Financial instruments subject to mandatory redemption, settlement terms, share value, amount		$ 150,000,000
Financial instruments subject to mandatory redemption, contract adjustment rate	4.00%	4.00%
Financial instruments subject to mandatory redemption, contract adjustment rate, annual amount (in dollars per share) | $ / shares	$ 2
Financial instruments subject to mandatory redemption, settlement terms, maximum number of shares (in shares) | shares					13.0
Equity units subject to mandatory redemption | Minimum | Forecast
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, settlement terms, number of shares (in shares) | shares								9.8
Equity units subject to mandatory redemption | Maximum | Forecast
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, settlement terms, number of shares (in shares) | shares								12.2
Equal to or greater than $133.08, 0.3757 shares of common stock | Equity units subject to mandatory redemption
Debt Instrument [Line Items]
Number of consecutive scheduled trading days | day			20
Financial instruments subject to mandatory redemption, anti-dilution provision, conversion ratio			0.3757
Equal to or greater than $133.08, 0.3757 shares of common stock | Equity units subject to mandatory redemption | Minimum
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, anti-dilution provision, stock price threshold (in dollars per share) | $ / shares			$ 133.08
Less than $133.08, but greater than $106.50, number of shares of common stock equal to $50 divided by the AMV | Equity units subject to mandatory redemption
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, anti-dilution provision, conversion ratio			50
Less than $133.08, but greater than $106.50, number of shares of common stock equal to $50 divided by the AMV | Equity units subject to mandatory redemption | Maximum
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, anti-dilution provision, stock price threshold (in dollars per share) | $ / shares			$ 133.08
Less than or equal to $106.50, 0.4695 shares of common stock | Equity units subject to mandatory redemption
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, anti-dilution provision, conversion ratio			0.4695
Less than or equal to $106.50, 0.4695 shares of common stock | Equity units subject to mandatory redemption | Maximum
Debt Instrument [Line Items]
Financial instruments subject to mandatory redemption, anti-dilution provision, stock price threshold (in dollars per share) | $ / shares			$ 106.50
November 2019 Series F 2.25% RSNs Maturing 2025 | Equity Units
Debt Instrument [Line Items]
Face amount		$ 1,300,000,000
Interest rate		2.25%
November 2019 Series F 2.25% RSNs Maturing 2025 | Unsuccessful remarketing | Equity Units
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage		100.00%
DTE Electric
Debt Instrument [Line Items]
Redemption of long-term debt					$ 321,000,000	$ 632,000,000	$ 0
DTE Electric | 1.45% Revenue Bonds Maturing in 2030 | Tax-Exempt Revenue Bonds
Debt Instrument [Line Items]
Face amount					$ 82,000,000
Interest rate				1.45%	1.45%
DTE Electric | 1.35% Revenue Bonds Maturing in 2029 | Tax-Exempt Revenue Bonds
Debt Instrument [Line Items]
Face amount					$ 59,000,000
Interest rate				1.45%	1.35%