Share-based compensation	6 Months Ended
Share-based compensation	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	Share-based compensation The ACE Limited 2004 Long-Term Incentive Plan (the 2004 LTIP) permits grants of both incentive and non-qualified stock options principally at an option price per share equal to the grant date fair value of ACE’s Common Shares. Stock options are generally granted with a 3-year vesting period and a 10-year term. Stock options typically vest in equal annual installments over the vesting period, which is also the requisite service period. On February 27, 2014, ACE granted 1,779,074 stock options with a weighted-average grant date fair value of $18.00 each. The fair value of the options issued is estimated on the date of grant using the Black-Scholes option pricing model. The 2004 LTIP also permits grants of restricted stock and restricted stock units. ACE generally grants restricted stock and restricted stock units with a 4-year vesting period, based on a graded vesting schedule. The restricted stock is granted at market close price on the grant date. On February 27, 2014, ACE granted 1,492,290 restricted stock awards and 276,992 restricted stock units to employees and officers with a grant date fair value of $96.76 each. Each restricted stock unit represents our obligation to deliver to the holder one Common Share upon vesting.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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