Stock-Based Compensation (Performance Share Awards Activity) (Details) - Performance shares - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Performance Shares
Balance at beginning of period (in shares)	1,127,437
Grants (in shares)	567,196
Forfeitures (in shares)	(162,091)
Payouts (in shares)	(429,925)
Balance at end of period (in shares)	1,102,617	1,127,437
Weighted Average Grant Date Fair Value
Balance at beginning of period (in dollars per share)	$ 117.06
Grants (in dollars per share)	118.43	$ 129.68	$ 115.85
Forfeitures (in dollars per share)	123.04
Payouts (in dollars per share)	107.84
Balance at end of period (in dollars per share)	$ 120.33	$ 117.06
Incremental shares granted to DTE Energy employees who did not separate with DT Midstream (in shares)	166,686
Cancellation of shares that were held by employees that separated due to the spin-off (in shares)	95,923