Segment information (Tables)

6 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Operations By Segment

The following tables present the Statement of Operations by segment:

For the Three Months Ended June 30, 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	$	3,534	$	1,309	$	466	$	2,258	$	197		$	579		$	—		$	8,343
Net premiums earned	3,390		1,168		378		2,225		159			571			—			7,891
Losses and loss expenses	2,214		747		316		1,125		90			189			34			4,715
Policy benefits	—		—		—		—		—			161			—			161
Policy acquisition costs	459		237		27		629		42			150			—			1,544
Administrative expenses	259		71		4		265		7			78			74			758
Underwriting income (loss)	458		113		31		206		20			(7		)	(108		)	713
Net investment income (loss)	521		64		4		151		55			97			(33		)	859
Other (income) expense	2		1		1		3		(15		)	(7		)	(215		)	(230		)
Amortization expense of purchased intangibles	—		3		7		12		—			1			54			77
Segment income	$	977	$	173	$	27	$	342	$	90		$	96		$	20		$	1,725
Net realized gains (losses) including OTTI															(223		)	(223		)
Interest expense															140			140
Chubb integration expenses															4			4
Income tax expense															208			208
Net income (loss)															$	(555	)	$	1,150

For the Three Months Ended June 30, 2018 (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	$	3,331		$	1,335	$	388	$	2,199		$	197		$	565	$	—		$	8,015
Net premiums earned	3,277			1,156		351		2,161			167			552		—			7,664
Losses and loss expenses	2,084			728		289		1,071			83			184		48			4,487
Policy benefits	—			—		—		—			—			150		—			150
Policy acquisition costs	448			228		26		584			40			138		—			1,464
Administrative expenses	253			68		1		266			9			80		70			747
Underwriting income (loss)	492			132		35		240			35			—		(118		)	816
Net investment income (loss)	510			59		6		155			65			85		(52		)	828
Other (income) expense	(13		)	1		1		(12		)	(6		)	8		(94		)	(115		)
Amortization expense of purchased intangibles	—			3		7		11			—			—		64			85
Segment income (loss)	$	1,015		$	187	$	33	$	396		$	106		$	77	$	(140	)	$	1,674
Net realized gains (losses) including OTTI																18			18
Interest expense																167			167
Chubb integration expenses																13			13
Income tax expense																218			218
Net income (loss)																$	(520	)	$	1,294

For the Six Months Ended June 30, 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	$	6,485		$	2,365	$	596	$	4,653	$	399		$	1,158		$	—		$	15,656
Net premiums earned	6,475			2,322		433		4,339		327			1,132			—			15,028
Losses and loss expenses	4,187			1,504		289		2,231		166			391			45			8,813
Policy benefits	—			—		—		—		—			357			—			357
Policy acquisition costs	918			468		34		1,225		85			278			—			3,008
Administrative expenses	499			139		5		514		17			157			137			1,468
Underwriting income (loss)	871			211		105		369		59			(51		)	(182		)	1,382
Net investment income (loss)	1,031			128		14		295		111			186			(70		)	1,695
Other (income) expense	(3		)	1		1		7		(24		)	(47		)	(204		)	(269		)
Amortization expense of purchased intangibles	—			6		14		23		—			1			109			153
Segment income (loss)	$	1,905		$	332	$	104	$	634	$	194		$	181		$	(157	)	$	3,193
Net realized gains (losses) including OTTI																(320		)	(320		)
Interest expense																280			280
Chubb integration expenses																7			7
Income tax expense																396			396
Net income (loss)																$	(1,160	)	$	2,190

For the Six Months Ended June 30, 2018 (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	$	6,143		$	2,383	$	496		$	4,583		$	390		$	1,124		$	—		$	15,119
Net premiums earned	6,306			2,296		394			4,268			335			1,092			—			14,691
Losses and loss expenses	3,992			1,614		236			2,149			150			389			59			8,589
Policy benefits	—			—		—			—			—			301			—			301
Policy acquisition costs	920			465		25			1,172			80			266			—			2,928
Administrative expenses	484			133		(2		)	505			19			158			142			1,439
Underwriting income (loss)	910			84		135			442			86			(22		)	(201		)	1,434
Net investment income (loss)	1,013			118		13			306			129			168			(113		)	1,634
Other (income) expense	(19		)	1		1			(5		)	(13		)	4			(131		)	(162		)
Amortization expense of purchased intangibles	—			6		14			21			—			1			128			170
Segment income (loss)	$	1,942		$	195	$	133		$	732		$	228		$	141		$	(311	)	$	3,060
Net realized gains (losses) including OTTI																		16			16
Interest expense																		324			324
Chubb integration expenses																		23			23
Income tax expense																		353			353
Net income (loss)																		$	(995	)	$	2,376