Segment information (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Operations By Segment

The following tables present the Statement of Operations by segment:

For the Three Months Ended March 31, 2020 (in millions of U.S. dollars)	North America Commercial P&C Insurance			North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance			Life Insurance		Corporate			Chubb Consolidated
Net premiums written	$	3,252		$	1,107	$	157	$	2,598	$	218		$	645	$	—		$	7,977
Net premiums earned	3,376			1,200		94		2,307		186			631		—			7,794
Losses and loss expenses	2,181			683		63		1,258		87			202		11			4,485
Policy benefits	—			—		—		—		—			129		—			129
Policy acquisition costs	492			245		11		642		45			180		—			1,615
Administrative expenses	259			68		4		258		10			76		66			741
Underwriting income (loss)	444			204		16		149		44			44		(77		)	824
Net investment income (loss)	516			66		9		145		54			95		(24		)	861
Other (income) expense	(3		)	2		—		4		(15		)	44		23			55
Amortization expense of purchased intangibles	—			3		7		12		—			1		50			73
Segment income (loss)	$	963		$	265	$	18	$	278	$	113		$	94	$	(174	)	$	1,557
Net realized gains (losses)															(958		)	(958		)
Interest expense															132			132
Income tax expense															215			215
Net income (loss)															$	(1,479	)	$	252

For the Three Months Ended March 31, 2019 (in millions of U.S. dollars)	North America Commercial P&C Insurance			North America Personal P&C Insurance		North America Agricultural Insurance			Overseas General Insurance		Global Reinsurance			Life Insurance			Corporate			Chubb Consolidated
Net premiums written	$	2,951		$	1,056	$	130		$	2,395	$	202		$	579		$	—		$	7,313
Net premiums earned	3,085			1,154		55			2,114		168			561			—			7,137
Losses and loss expenses	1,973			757		(27		)	1,106		76			202			11			4,098
Policy benefits	—			—		—			—		—			196			—			196
Policy acquisition costs	459			231		7			596		43			128			—			1,464
Administrative expenses	240			68		1			249		10			79			63			710
Underwriting income (loss)	413			98		74			163		39			(44		)	(74		)	669
Net investment income (loss)	510			64		10			144		56			89			(37		)	836
Other (income) expense	(5		)	—		—			4		(9		)	(40		)	11			(39		)
Amortization expense of purchased intangibles	—			3		7			11		—			—			55			76
Segment income (loss)	$	928		$	159	$	77		$	292	$	104		$	85		$	(177	)	$	1,468
Net realized gains (losses) including OTTI																	(97		)	(97		)
Interest expense																	140			140
Chubb integration expenses																	3			3
Income tax expense																	188			188
Net income (loss)																	$	(605	)	$	1,040