Earnings per share (Tables)

12 Months Ended

Dec. 31, 2024

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted

	Year Ended December 31
(in millions of U.S. dollars, except share and per share data)	2024		2023		2022
Numerator:
Net income	$	9,640	$	9,015	$	5,246
Net income (loss) attributable to noncontrolling interests	368		(13)		—
Net income attributable to Chubb	$	9,272	$	9,028	$	5,246
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	404,189,749		410,845,263		419,779,847
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	4,296,686		3,357,305		3,747,597
Weighted-average shares outstanding and assumed conversions	408,486,435		414,202,568		423,527,444
Basic earnings per share attributable to Chubb	$	22.94	$	21.97	$	12.50
Diluted earnings per share attributable to Chubb	$	22.70	$	21.80	$	12.39
Potential anti-dilutive share conversions	1,150,169		2,385,099		1,467,840