Stock-Based Compensation - Summary of Changes in Status of Time-Based Awards (Details) - Time-based Awards	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Units
Non-vested at beginning of period (in shares) | shares	61,620
Granted (in shares) | shares	149,650
Vested (in shares) | shares	(22,450)
Forfeited (in shares) | shares	(8,232)
Non-vested at end of period (in shares) | shares	180,588
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 79.68
Granted (in dollars per share) | $ / shares	86.59
Vested (in dollars per share) | $ / shares	84.81
Forfeited (in dollars per share) | $ / shares	81.51
Non-vested at end of period (in dollars per share) | $ / shares	$ 84.69
CECONY
Units
Non-vested at beginning of period (in shares) | shares	57,870
Granted (in shares) | shares	118,458
Vested (in shares) | shares	(21,200)
Forfeited (in shares) | shares	(7,713)
Non-vested at end of period (in shares) | shares	147,415
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 79.70
Granted (in dollars per share) | $ / shares	87.46
Vested (in dollars per share) | $ / shares	84.81
Forfeited (in dollars per share) | $ / shares	81.54
Non-vested at end of period (in dollars per share) | $ / shares	$ 85.10