Stock-Based Compensation - Schedule of Changes in Status of Time-Based Awards (Details) - Time-based Awards	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Units
Non-vested at beginning of period (in shares) | shares	508,070
Granted (in shares) | shares	218,875
Vested (in shares) | shares	(134,126)
Forfeited (in shares) | shares	(10,870)
Transferred (in shares) | shares	0
Non-vested at end of period (in shares) | shares	581,949
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 89.80
Granted (in dollars per share) | $ / shares	98.27
Vested (in dollars per share) | $ / shares	86.96
Forfeited (in dollars per share) | $ / shares	94.28
Transferred (in dollars per share) | $ / shares	0
Non-vested at end of period (in dollars per share) | $ / shares	$ 93.56
CECONY
Units
Non-vested at beginning of period (in shares) | shares	424,655
Granted (in shares) | shares	181,360
Vested (in shares) | shares	(107,465)
Forfeited (in shares) | shares	(9,705)
Transferred (in shares) | shares	(1,300)
Non-vested at end of period (in shares) | shares	487,545
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 90.28
Granted (in dollars per share) | $ / shares	99.80
Vested (in dollars per share) | $ / shares	87.82
Forfeited (in dollars per share) | $ / shares	94.59
Transferred (in dollars per share) | $ / shares	87.75
Non-vested at end of period (in dollars per share) | $ / shares	$ 94.28