Debt	9 Months Ended
Sep. 30, 2015
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	Debt In March 2015, ACE INA Holdings Inc. (ACE INA) issued $800 million of 3.15 percent senior notes due March 2025. These senior notes are redeemable at any time at ACE INA's option subject to a “make-whole” premium (the present value of the remaining principal and interest discounted at the applicable U.S. Treasury rate plus 0.15 percent). The notes are also redeemable at par plus accrued and unpaid interest in the event of certain changes in tax law. These notes do not have the benefit of any sinking fund. These senior unsecured notes are guaranteed on a senior basis by ACE Limited and they rank equally with all of ACE's other senior obligations. They also contain customary limitations on lien provisions as well as customary events of default provisions which, if breached, could result in the accelerated maturity of such senior debt. In May 2015, ACE INA's $450 million of 5.6 percent senior notes matured and were fully paid. Subsequent Event In October 2015, ACE INA issued $5.3 billion of senior notes comprising $1.3 billion of 2.30 percent senior notes due November 2020 (2020 Notes), $1.0 billion of 2.875 percent senior notes due November 2022 (2022 Notes), $1.5 billion of 3.35 percent senior notes due May 2026 (2026 Notes), and $1.5 billion of 4.35 percent senior notes due November 2045 (2045 Notes). The proceeds from the issuance of these notes are expected to be used to finance a portion of the Chubb acquisition. However, if the Chubb acquisition is not consummated or the merger agreement is terminated on or prior to September 30, 2016, ACE INA will be required to redeem all of the notes at a price equivalent to 101 percent of the principal amount, plus accrued and unpaid interest, if any. ACE INA may redeem some or all of the notes at its option one month (for the 2020 Notes), two months (for the 2022 Notes), three months (for the 2026 Notes), and six months (for the 2045 Notes) prior to the respective maturity dates at a redemption price equal to 100 percent of the principal amount of the notes plus accrued and unpaid interest. Otherwise, these notes are redeemable at any time at ACE INA's option subject to a “make-whole” premium, defined as the present value of the remaining principal and interest discounted at the applicable U.S. Treasury rate plus 0.15 percent (for the 2020 Notes), 0.20 percent (for the 2022 Notes), 0.20 percent (for the 2026 Notes), and 0.25 percent, (for the 2045 Notes). The remaining terms of the senior notes are commensurate with those of our existing senior notes as described above.

Debt

In March 2015, ACE INA Holdings Inc. (ACE INA) issued $800 million of 3.15 percent senior notes due March 2025. These senior notes are redeemable at any time at ACE INA's option subject to a “make-whole” premium (the present value of the remaining principal and interest discounted at the applicable U.S. Treasury rate plus 0.15 percent). The notes are also redeemable at par plus accrued and unpaid interest in the event of certain changes in tax law. These notes do not have the benefit of any sinking fund. These senior unsecured notes are guaranteed on a senior basis by ACE Limited and they rank equally with all of ACE's other senior obligations. They also contain customary limitations on lien provisions as well as customary events of default provisions which, if breached, could result in the accelerated maturity of such senior debt.

In May 2015, ACE INA's $450 million of 5.6 percent senior notes matured and were fully paid.

Subsequent Event

In October 2015, ACE INA issued $5.3 billion of senior notes comprising $1.3 billion of 2.30 percent senior notes due November 2020 (2020 Notes), $1.0 billion of 2.875 percent senior notes due November 2022 (2022 Notes), $1.5 billion of 3.35 percent senior notes due May 2026 (2026 Notes), and $1.5 billion of 4.35 percent senior notes due November 2045 (2045 Notes). The proceeds from the issuance of these notes are expected to be used to finance a portion of the Chubb acquisition. However, if the Chubb acquisition is not consummated or the merger agreement is terminated on or prior to September 30, 2016, ACE INA will be required to redeem all of the notes at a price equivalent to 101 percent of the principal amount, plus accrued and unpaid interest, if any.

ACE INA may redeem some or all of the notes at its option one month (for the 2020 Notes), two months (for the 2022 Notes), three months (for the 2026 Notes), and six months (for the 2045 Notes) prior to the respective maturity dates at a redemption price equal to 100 percent of the principal amount of the notes plus accrued and unpaid interest. Otherwise, these notes are redeemable at any time at ACE INA's option subject to a “make-whole” premium, defined as the present value of the remaining principal and interest discounted at the applicable U.S. Treasury rate plus 0.15 percent (for the 2020 Notes), 0.20 percent (for the 2022 Notes), 0.20 percent (for the 2026 Notes), and 0.25 percent, (for the 2045 Notes). The remaining terms of the senior notes are commensurate with those of our existing senior notes as described above.