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Share-based compensation | 9 Months Ended
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Sep. 30, 2019
Share-based Payment Arrangement [Abstract] |
Share-based compensation | Share-based compensation The Chubb Limited 2016 Long-Term Incentive Plan (the 2016 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 Chubb'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 respective vesting period, which is also the requisite service period. On February 28, 2019, Chubb granted 2,073,712 stock options with a weighted-average grant date fair value of $18.79 each. The fair value of the options issued is estimated on the grant date using the Black-Scholes option pricing model. The 2016 LTIP also permits grants of service-based restricted stock and restricted stock units as well as performance-based restricted stock awards. Chubb generally grants service-based restricted stock and restricted stock units with a 4-year vesting period, based on a graded vesting schedule. Beginning in 2017, the performance-based restricted stock awards granted comprise target awards and premium awards that cliff vest at the end of a 3-year performance period based on both tangible book value (shareholders' equity less goodwill and intangible assets, net of tax) per share growth and P&C combined ratio compared to a defined group of peer companies. Premium awards are subject to an additional vesting provision based on total shareholder return compared to our peer group. The restricted stock is granted at market close price on the grant date. On February 28, 2019, Chubb granted 1,078,247 service-based restricted stock awards, 357,463 service-based restricted stock units, and 212,059 performance-based stock awards to employees and officers with a grant date fair value of $133.90 each. Each restricted stock unit represents our obligation to deliver to the holder one Common Share upon vesting.

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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