Earnings per share (Tables)

12 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted

			As Adjusted
	Year Ended December 31
(in millions of U.S. dollars, except share and per share data)	2023		2022		2021
Numerator:
Net income	$	9,015	$	5,246	$	8,525
Net loss attributable to noncontrolling interests	(13)		—		—
Net income attributable to Chubb	$	9,028	$	5,246	$	8,525
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	410,845,263		419,779,847		439,968,422
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,357,305		3,747,597		3,228,856
Weighted-average shares outstanding and assumed conversions	414,202,568		423,527,444		443,197,278
Basic earnings per share attributable to Chubb	$	21.97	$	12.50	$	19.38
Diluted earnings per share attributable to Chubb	$	21.80	$	12.39	$	19.24
Potential anti-dilutive share conversions	2,385,099		1,467,840		1,532,066