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Share-Based Compensation Plans (Tables) | 3 Months Ended
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Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Share-based compensation expense recognized in continuing operations | The following table summarizes share-based compensation expense recognized in the Condensed Consolidated Statements of Income in Compensation and benefits (in millions):
| Three Months Ended March 31
| 2019 |  | 2018
Restricted share units (“RSUs”) | $ | 63 |  |  | $ | 58 |
Performance share awards (“PSAs”) | 23 |  |  | 16 |
Employee share purchase plans | 3 |  |  | 3 |
Total share-based compensation expense | $ | 89 |  |  | $ | 77 |
Restricted share unit activity | The following table summarizes the status of the Company’s RSUs, including shares related to the Divested Business (shares in thousands, except fair value):
| 2019 |  | 2018
| Shares |  | Fair Value (1) |  | Shares |  | Fair Value (1)
Non-vested at beginning of period | 4,208 |  |  | $ | 120 |  |  | 4,849 |  |  | $ | 104 |
Granted | 517 |  |  | $ | 170 |  |  | 505 |  |  | $ | 144 |
Vested | (677 | ) |  | $ | 117 |  |  | (806 | ) |  | $ | 101 |
Forfeited | (41 | ) |  | $ | 121 |  |  | (63 | ) |  | $ | 105 |
Non-vested at end of period | 4,007 |  |  | $ | 127 |  |  | 4,485 |  |  | $ | 109 |
(1) Represents per share weighted average fair value of award at date of grant.
Performance-based plans | during the three months ended March 31, 2019 and the years ended December 31, 2018 and 2017, respectively (shares in thousands and dollars in millions, except fair value):
| March 31, 2019 |  | December 31, 2018 |  | December 31, 2017
Target PSAs granted during period | 467 |  |  | 564 |  |  | 548 |
Weighted average fair value per share at date of grant | $ | 165 |  |  | $ | 134 |  |  | $ | 114 |
Number of shares that would be issued based on current performance levels | 467 |  |  | 838 |  |  | 1,067 |
Unamortized expense, based on current performance levels | $ | 77 |  |  | $ | 70 |  |  | $ | 32 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + 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 http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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