text: **Reconciliation of Pre-tax and After-tax Free Cash Flow**
  
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              [html]<thead><tr><tdrowspan="2">( In millions of dollars )</td><tdcolspan="2">Years ended December 31</td></tr><tr><td>2013</td><td>2012</td></tr></thead><tbody><tr><td>Cash provided by operating activities</td><td>$ 3.990</td><td>$ 3.421</td></tr><tr><td>Add ( deduct ):</td><td></td><td></td></tr><tr><td>Property, plant and equipment</td><td>expenditures</td><td>( 2.240 )</td></tr><tr><td>( 2.142 )</td><td></td><td></td></tr><tr><td>Interest on long - term debt expense,</td><td>net of capitalization</td><td>( 709 )</td></tr><tr><td>( 663 )</td><td>Restructuring, acquisition and other</td><td>expenses</td></tr><tr><td>85</td><td>92</td><td>Cash income taxes</td></tr><tr><td>496</td><td>380</td><td>Interest paid</td></tr><tr><td>700</td><td>680</td><td>Change in non - cash working capital</td></tr><tr><td>( 238 )</td><td>248</td><td>Other adjustments</td></tr><tr><td>( 40 )</td><td>13</td><td>Pre - tax free cash flow</td></tr><tr><td>2.044</td><td>2.029</td><td>Cash income taxes</td></tr></tbody>
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