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Share-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Compensation Expense Recognized in Continuing Operations | The following table summarizes share-based compensation expense recognized in the Consolidated Statements of Income in Compensation and benefits (in millions):
| Years Ended December 31
| 2022 |  | 2021 |  | 2020
Restricted share units | $ | 251 |  |  | $ | 204 |  |  | $ | 186 |
Performance share awards | 134 |  |  | 189 |  |  | 116 |
Employee share purchase plans and other (1) | 12 |  |  | 56 |  |  | 10 |
Total share-based compensation expense | 397 |  |  | 449 |  |  | 312 |
Tax benefit | 83 |  |  | 87 |  |  | 61 |
Share-based compensation expense, net of tax | $ | 314 |  |  | $ | 362 |  |  | $ | 251 |
(1) 2021 includes expenses related to the Aon United Growth Ownership Plan.
Schedule of Restricted Share Unit Activity | The following table summarizes the status of the Company’s RSUs (shares in thousands, except fair value):
| Shares |  | Fair Value (1)
Non-vested balance at December 31, 2021 | 3,075 |  |  | $ | 203 |
Granted | 1,117 |  |  | $ | 279 |
Vested | (1,154) |  |  | $ | 187 |
Forfeited | (175) |  |  | $ | 219 |
Non-vested balance at December 31, 2022 | 2,863 |  |  | $ | 238 |
(1)Represents per share weighted average fair value of award at date of grant.
Schedule of Performance-based Plans Information | The following table summarizes the status of the Company's PSAs at 100% of the targeted amount (shares in thousands, except fair value):
| Shares |  | Fair Value (1)
Non-vested balance at December 31, 2021 | 1,298 |  |  | $ | 181 |
Granted | 300 |  |  | $ | 311 |
Vested | (444) |  |  | $ | 163 |
Forfeited | (18) |  |  | $ | 217 |
Non-vested balance at December 31, 2022 | 1,136 |  |  | $ | 222 |
(1)Represents per share weighted average fair value of award at date of grant.

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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