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Share-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2018
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 Consolidated Statements of Income in Compensation and benefits (in millions):
Years ended December 31 | 2018 |  | 2017 |  | 2016
Restricted share units (“RSUs”) | $ | 186 |  |  | $ | 182 |  |  | $ | 176 |
Performance share awards ("PSAs") | 143 |  |  | 127 |  |  | 120 |
Employee share purchase plans | 9 |  |  | 10 |  |  | 10 |
Total share-based compensation expense | 338 |  |  | 319 |  |  | 306 |
Tax benefit | 74 |  |  | 73 |  |  | 90 |
Share-based compensation expense, net of tax | $ | 264 |  |  | $ | 246 |  |  | $ | 216 |
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):
| 2018 |  | 2017 |  | 2016
Years ended December 31 | Shares |  | Fair Value at Date of Grant |  | Shares |  | Fair Value at Date of Grant |  | Shares |  | Fair Value at Date of Grant
Non-vested at beginning of year | 4,849 |  |  | $ | 104 |  |  | 6,195 |  |  | $ | 89 |  |  | 7,167 |  |  | $ | 77 |
Granted | 1,500 |  |  | 141 |  |  | 1,700 |  |  | 123 |  |  | 2,252 |  |  | 101 |
Vested | (1,943 | ) |  | 97 |  |  | (2,407 | ) |  | 82 |  |  | (2,845 | ) |  | 70 |
Forfeited | (198 | ) |  | 114 |  |  | (639 | ) |  | 93 |  |  | (379 | ) |  | 82 |
Non-vested at end of year | 4,208 |  |  | $ | 120 |  |  | 4,849 |  |  | $ | 104 |  |  | 6,195 |  |  | $ | 89 |
Performance-based plans | The following table summarizes the Company’s target PSAs granted and shares that would be issued at current performance levels for PSAs granted during the years ended December 31, 2018, 2017, and 2016 (shares in thousands and dollars in millions, except fair value):
| 2018 |  | 2017 |  | 2016
Target PSAs granted during period | 564 |  |  | 548 |  |  | 750 |
Weighted average fair value per share at date of grant | $ | 134 |  |  | $ | 114 |  |  | $ | 100 |
Number of shares that would be issued based on current performance levels | 840 |  |  | 1,068 |  |  | 1,122 |
Unamortized expense, based on current performance levels | $ | 81 |  |  | $ | 44 |  |  | $ | — |

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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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