SCHEDULE III SUPPLEMENTARY INSURANCE INFORMATION (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
SUPPLEMENTARY INSURANCE INFORMATION
Deferred policy acquisition costs	$ 595	$ 566	$ 504
Reserves for losses, loss expenses, life policy deposit contracts	5,665	5,505	5,306
Unearned premiums	2,834	2,598	2,365
Premiums earned	5,344	4,898	4,493
Net investment income	446	422	438
Benefits, claims, losses, and settlement expenses	3,958	3,467	3,480
Amortization of deferred policy acquisition costs	849	778	715
Other operating expenses	487	459	418
Net premiums written (excluding life)	5,487	5,045	4,603
Property and casualty insurance operations
SUPPLEMENTARY INSURANCE INFORMATION
Deferred policy acquisition costs	440	402	364
Reserves for losses, loss expenses, life policy deposit contracts	3,853	3,747	3,598
Unearned premiums	2,834	2,598	2,365
Premiums earned	5,260	4,820	4,422
Net investment income	334	313	327
Benefits, claims, losses, and settlement expenses	3,853	3,360	3,379
Amortization of deferred policy acquisition costs	836	763	705
Other operating expenses	462	437	397
Net premiums written (excluding life)	5,487	5,045	4,603
Life insurance operations
SUPPLEMENTARY INSURANCE INFORMATION
Deferred policy acquisition costs	155	164	140
Reserves for losses, loss expenses, life policy deposit contracts	1,812	1,758	1,708
Premiums earned	84	78	71
Net investment income	96	94	95
Benefits, claims, losses, and settlement expenses	105	107	101
Amortization of deferred policy acquisition costs	13	15	10
Other operating expenses	25	22	21
Management operations
SUPPLEMENTARY INSURANCE INFORMATION
Net investment income	$ 16	$ 15	$ 16