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Share Repurchase Programs (Tables) | 12 Months Ended
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Dec. 31, 2017
Share Repurchase Programs |
Share Repurchase Programs | The following share repurchase programs were authorized by the Company’s Board of Directors:
In billions |  |  |  |  | Remaining as of
Authorization Date |  | Authorized |  | December 31, 2017
November 2, 2016 (“2016 Repurchase Program”) |  | $ | 15.0 |  | $ | 13.9
December 15, 2014 (“2014 Repurchase Program”) |  |  | 10.0 |  |  | —
December 17, 2013 (“2013 Repurchase Program”) |  |  | 6.0 |  |  | —

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