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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2018
Stock-Based Compensation |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan |
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
In millions |  | 2018 |  | 2017 |  | 2018 |  | 2017
Stock-based compensation: |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  | $ | 11 |  | $ | 14 |  | $ | 25 |  | $ | 34
Restricted stock units and performance share units |  |  | 43 |  |  | 39 |  |  | 85 |  |  | 74
Total stock-based compensation |  | $ | 54 |  | $ | 53 |  | $ | 110 |  | $ | 108

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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