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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information |
| 2016 |  | 2015 |  | 2014
| In thousands
Income taxes paid, net of refunds | $ | 434,795 |  |  | $ | 339,010 |  |  | $ | 370,202 |
Interest paid, net of amounts capitalized | 87,521 |  |  | 83,850 |  |  | 82,280 |
Noncash transactions: |  |  |  |  |
Property, plant and equipment expenditures included in accounts payable or accrued liabilities | 28,103 |  |  | 9,445 |  |  | 9,529 |
Computer software costs included in accounts payable or accrued liabilities | 15,143 |  |  | 4,394 |  |  | 27,555 |

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