Earnings per share (Tables)

3 Months Ended

Mar. 31, 2025

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted

	Three Months Ended
	March 31
(in millions of U.S. dollars, except share and per share data)	2025		2024
Numerator:
Net income	$	1,343	$	2,294
Net income attributable to noncontrolling interests	12		151
Net income attributable to Chubb	$	1,331	$	2,143
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	400,681,956		405,662,694
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,992,395		4,076,941
Weighted-average shares outstanding and assumed conversions	404,674,351		409,739,635
Basic earnings per share attributable to Chubb	$	3.32	$	5.28
Diluted earnings per share attributable to Chubb	$	3.29	$	5.23
Potential anti-dilutive share conversions	1,268,531		1,005,420