Segment information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Operations By Segment

For the Three Months Ended June 30, 2015	Insurance – North American P&C		Insurance – North American Agriculture			Insurance – Overseas General		Global Reinsurance			Life			Corporate			ACE Consolidated
(in millions of U.S. dollars)
Net premiums written	$	1,975	$	379		$	1,669	$	261		$	500		$	—		$	4,784
Net premiums earned	1,688		321			1,644		220			487			—			4,360
Losses and loss expenses	1,120		271			816		72			137			1			2,417
Policy benefits	—		—			—		—			153			—			153
Policy acquisition costs	130		23			396		60			118			—			727
Administrative expenses	189		4			254		13			74			44			578
Underwriting income (loss)	249		23			178		75			5			(45		)	485
Net investment income	269		6			139		79			66			3			562
Net realized gains (losses) including OTTI	—		(2		)	13		5			103			7			126
Interest expense	2		—			1		1			2			65			71
Other (income) expense:
(Gains) losses from fair value changes in separate account assets	—		—			—		—			(6		)	—			(6		)
Other	23		8			8		(3		)	(17		)	4			23
Income tax expense (benefit)	89		4			69		7			10			(36		)	143
Net income (loss)	$	404	$	15		$	252	$	154		$	185		$	(68	)	$	942

For the Three Months Ended June 30, 2014	Insurance – North American P&C			Insurance – North American Agriculture		Insurance – Overseas General		Global Reinsurance			Life			Corporate			ACE Consolidated
(in millions of U.S. dollars)
Net premiums written	$	1,635		$	388	$	1,760	$	278		$	498		$	—		$	4,559
Net premiums earned	1,542			330		1,709		261			490			—			4,332
Losses and loss expenses	1,016			287		830		109			146			—			2,388
Policy benefits	—			—		—		—			144			—			144
Policy acquisition costs	152			23		402		60			121			—			758
Administrative expenses	175			1		256		14			73			47			566
Underwriting income (loss)	199			19		221		78			6			(47		)	476
Net investment income	265			6		136		80			66			3			556
Net realized gains (losses) including OTTI	(11		)	8		14		(15		)	(72		)	3			(73		)
Interest expense	2			—		1		2			3			64			72
Other (income) expense:
(Gains) losses from fair value changes in separate account assets	—			—		—		—			(17		)	—			(17		)
Other	(24		)	9		8		(10		)	4			5			(8		)
Income tax expense (benefit)	91			5		55		10			12			(40		)	133
Net income (loss)	$	384		$	19	$	307	$	141		$	(2	)	$	(70	)	$	779

For the Six Months Ended June 30, 2015	Insurance – North American P&C			Insurance – North American Agriculture			Insurance – Overseas General		Global Reinsurance			Life			Corporate			ACE Consolidated
(in millions of U.S. dollars)
Net premiums written	$	3,405		$	467		$	3,463	$	534		$	991		$	—		$	8,860
Net premiums earned	3,214			385			3,281		446			961			—			8,287
Losses and loss expenses	2,155			293			1,630		171			289			1			4,539
Policy benefits	—			—			—		—			295			—			295
Policy acquisition costs	291			19			785		114			225			—			1,434
Administrative expenses	360			3			510		25			147			87			1,132
Underwriting income (loss)	408			70			356		136			5			(88		)	887
Net investment income	532			12			277		154			132			6			1,113
Net realized gains (losses) including OTTI	(6		)	(2		)	3		(6		)	44			4			37
Interest expense	4			—			2		2			3			128			139
Other (income) expense:
(Gains) losses from fair value changes in separate account assets	—			—			—		—			(17		)	—			(17		)
Other	16			16			25		(8		)	(29		)	9			29
Income tax expense (benefit)	169			14			121		15			19			(75		)	263
Net income (loss)	$	745		$	50		$	488	$	275		$	205		$	(140	)	$	1,623

For the Six Months Ended June 30, 2014	Insurance – North American P&C			Insurance – North American Agriculture			Insurance – Overseas General		Global Reinsurance			Life			Corporate			ACE Consolidated
(in millions of U.S. dollars)
Net premiums written	$	3,053		$	582		$	3,531	$	586		$	992		$	—		$	8,744
Net premiums earned	3,029			433			3,321		545			974			—			8,302
Losses and loss expenses	1,956			413			1,647		235			297			1			4,549
Policy benefits	—			—			—		—			258			—			258
Policy acquisition costs	311			28			788		127			232			—			1,486
Administrative expenses	336			2			506		28			141			88			1,101
Underwriting income (loss)	426			(10		)	380		155			46			(89		)	908
Net investment income	535			13			268		157			130			6			1,109
Net realized gains (losses) including OTTI	(20		)	6			4		(23		)	(148		)	4			(177		)
Interest expense	5			—			2		3			6			127			143
Other (income) expense:
(Gains) losses from fair value changes in separate account assets	—			—			—		—			(11		)	—			(11		)
Other	(44		)	17			2		(29		)	11			12			(31		)
Income tax expense (benefit)	174			(2		)	92		20			22			(80		)	226
Net income (loss)	$	806		$	(6	)	$	556	$	295		$	—		$	(138	)	$	1,513

Net Premiums Earned For Segment By Product

(in millions of U.S. dollars)	Property & All Other		Casualty		Life, Accident & Health		ACE Consolidated
For the Three Months Ended June 30, 2015
Insurance – North American P&C	$	507	$	1,079	$	102	$	1,688
Insurance – North American Agriculture	321		—		—		321
Insurance – Overseas General	729		391		524		1,644
Global Reinsurance	102		118		—		220
Life	—		—		487		487
	$	1,659	$	1,588	$	1,113	$	4,360
For the Three Months Ended June 30, 2014
Insurance – North American P&C	$	423	$	1,018	$	101	$	1,542
Insurance – North American Agriculture	330		—		—		330
Insurance – Overseas General	727		395		587		1,709
Global Reinsurance	132		129		—		261
Life	—		—		490		490
	$	1,612	$	1,542	$	1,178	$	4,332
(in millions of U.S. dollars)	Property & All Other		Casualty		Life, Accident & Health		ACE Consolidated
For the Six Months Ended June 30, 2015
Insurance – North American P&C	$	917	$	2,094	$	203	$	3,214
Insurance – North American Agriculture	385		—		—		385
Insurance – Overseas General	1,457		773		1,051		3,281
Global Reinsurance	219		227		—		446
Life	—		—		961		961
	$	2,978	$	3,094	$	2,215	$	8,287
For the Six Months Ended June 30, 2014
Insurance – North American P&C	$	828	$	1,999	$	202	$	3,029
Insurance – North American Agriculture	433		—		—		433
Insurance – Overseas General	1,420		764		1,137		3,321
Global Reinsurance	286		259		—		545
Life	—		—		974		974
	$	2,967	$	3,022	$	2,313	$	8,302