Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015
Cash flows from operating activities
Net income	$ 439		$ 681
Adjustments to reconcile net income to net cash flows from operating activities
Net realized (gains) losses	394		89
Amortization of premiums/discounts on fixed maturities	174		36
Deferred income taxes	(42)		7
Unpaid losses and loss expenses	(72)		(320)
Unearned premiums	(616)		212
Future policy benefits	28		48
Insurance and reinsurance balances payable	(15)		158
Accounts payable, accrued expenses, and other liabilities	(34)		(46)
Income taxes payable	143		20
Insurance and reinsurance balances receivable	601		240
Reinsurance recoverable on losses and loss expenses	194		185
Reinsurance recoverable on policy benefits	3		2
Deferred policy acquisition costs	(480)		(128)
Prepaid reinsurance premiums	14		(32)
Other	289		(77)
Net cash flows from operating activities	1,020		1,075
Cash flows from investing activities
Purchases of fixed maturities available for sale	(8,104)		(4,305)
Purchases of to be announced mortgage-backed securities	0		(31)
Purchases of fixed maturities held to maturity	(77)		(21)
Purchases of equity securities	(33)		(39)
Sales of fixed maturities available for sale	6,329		2,002
Sales of equity securities	761		28
Maturities and redemptions of fixed maturities available for sale	1,553		1,481
Maturities and redemptions of fixed maturities held to maturity	249		324
Net change in short-term investments	11,932		(255)
Net derivative instruments settlements	(22)		(51)
Payments to Acquire Businesses, Net of Cash Acquired	(14,262)		0
Other	59		(153)
Net cash flows used for investing activities	(1,615)		(1,020)
Cash flows from financing activities
Dividends paid on Common Shares	(218)		(214)
Common Shares repurchased	0		(347)
Proceeds from issuance of long-term debt	0		800
Proceeds from issuance of repurchase agreements	853		477
Repayments of Long-term Debt	853
Repayment of repurchase agreements	(853)		(477)
Proceeds from share-based compensation plans, including windfall tax benefits	51		39
Policyholder contract deposits	118		101
Policyholder contract withdrawals	(49)		(40)
Other	(4)		(6)
Net cash flows (used for) from financing activities	(102)		333
Effect of foreign currency rate changes on cash and cash equivalents	13		(95)
Net (decrease) increase in cash	(684)		293
Cash – beginning of period	1,775	[1],[2]	655	[3]
Cash – end of period	1,091	[2],[4]	948	[3]
Supplemental cash flow information
Taxes paid	106		96
Interest paid	$ 71		$ 48

[1] Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At December 31, 2015, the cash balance of one or more entities was negative; however, the overall Pool balances were positive.

[2] Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At March 31, 2016 and December 31, 2015, the cash balance of one or more entities was negative; however, the overall Pool balances were positive.

[3] maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At March 31, 2015 and December 31, 2014, the cash balance of one or more entities was negative; however, the overall Pool balances were positive.

[4] Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At March 31, 2016, the cash balance of one or more entities was negative; however, the overall Pool balances were positive.