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In accordance with U.K. law, the reporting person agreed to pay the issuer the nominal value of US$0.01 per share issued to the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted share unit award was granted on February 13, 2014 and vests in accordance with the terms of the Aon Stock Incentive Plan as follow: 33 1/3% of the award vest on each of the first through third anniversaries of the date of grant"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted share unit award was granted on February 13, 2014 and vests in accordance with the terms of the Aon Stock Incentive Plan as follow: 33 1/3% of the award vest on each of the first through third anniversaries of the date of grant"}],"balance_after":0,"derivative":{"exercise_date":"2017-02-13","underlying":"Class A Ordinary Shares","underlying_shares":1107},"source":{"system":"sec-edgar","filing":"0001179110-17-002462","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/315293/000117911017002462/edgar.xml","form_type":"4"}},{"id":4447171,"issuer":{"id":2608,"kind":"organization","name":"Aon plc","symbol":"AON"},"owners":[{"id":157024,"kind":"person","name":"LIEB PETER M","position":1,"cik":"0001263967","reported_name":"LIEB PETER M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Class A Ordinary Shares","published_at":"2017-02-15T23:03:48.000Z","date":"2017-02-13","kind":"tax_withholding","acquired":false,"shares":480,"price":115.87,"value":55617.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Class A Ordinary Shares withheld by the issuer for the payment of withholding taxes in connection with the vesting of a restricted share unit award."}],"balance_after":26463.917,"source":{"system":"sec-edgar","filing":"0001179110-17-002462","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/315293/000117911017002462/edgar.xml","form_type":"4"}},{"id":4447170,"issuer":{"id":2608,"kind":"organization","name":"Aon plc","symbol":"AON"},"owners":[{"id":157024,"kind":"person","name":"LIEB PETER M","position":1,"cik":"0001263967","reported_name":"LIEB PETER M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Class A Ordinary Shares","published_at":"2017-02-15T23:03:48.000Z","date":"2017-02-13","kind":"exercise","acquired":true,"shares":1107,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Class A Ordinary Shares acquired upon the vesting of the restricted share unit award."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Class A Ordinary Shares acquired upon the vesting of the restricted share unit award."}],"balance_after":26943.917,"source":{"system":"sec-edgar","filing":"0001179110-17-002462","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/315293/000117911017002462/edgar.xml","form_type":"4"}},{"id":4447169,"issuer":{"id":2608,"kind":"organization","name":"Aon plc","symbol":"AON"},"owners":[{"id":157024,"kind":"person","name":"LIEB PETER M","position":1,"cik":"0001263967","reported_name":"LIEB PETER M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Class A Ordinary Shares","published_at":"2017-02-15T23:03:48.000Z","date":"2016-12-19","kind":"gift","acquired":false,"shares":435,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":25756.531,"source":{"system":"sec-edgar","filing":"0001179110-17-002462","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/315293/000117911017002462/edgar.xml","form_type":"4"}}]}