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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Information |
Schedule of supplemental cash flow information |
($ millions) |  | 2018 |  | 2017 |  |
Accounts receivable |  | 219 |  | (79 | ) |
Inventories |  | 316 |  | (268 | ) |
Accounts payable and accrued liabilities |  | (503 | ) | 68 |  |
Current portion of provisions |  | (110 | ) | (48 | ) |
Income taxes payable (net) |  | 511 |  | 421 |  |
|  | 433 |  | 94 |  |
Relating to: |  |  |  |  |  |
| Operating activities |  | 408 |  | (173 | ) |
| Investing activities |  | 25 |  | 267 |  |
|  | 433 |  | 94 |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities:
($ millions) | Short-Term Debt |  | Current Portion of Long-Term Debt |  | Long-Term Debt |  | Partnership Liability |  | Dividends Payable |  |
At December 31, 2017 | 2 136 |  | 71 |  | 13 372 |  | 483 |  | — |  |
Changes from financing cash flows: |  |  |  |  |  |  |  |  |  |  |
| Net issuance of commercial paper | 866 |  | — |  | — |  | — |  | — |  |
| Repayment of long-term debt | — |  | (109 | ) | — |  | — |  | — |  |
| Realized foreign exchange losses | 131 |  | 1 |  | — |  | — |  | — |  |
| Dividends paid on common shares | — |  | — |  | — |  | — |  | (2 333 | ) |
| Payments of finance lease liabilities | — |  | — |  | (74 | ) | — |  | — |  |
| Distributions to non-controlling interest | — |  | — |  | — |  | (6 | ) | — |  |
Non-cash changes: |  |  |  |  |  |  |  |  |  |  |
| Dividends declared on common shares | — |  | — |  | — |  | — |  | 2 333 |  |
| Unrealized foreign exchange losses | 98 |  | 9 |  | 851 |  | — |  | — |  |
| Deferred financing costs | — |  | — |  | (14 | ) | — |  | — |  |
| Modification to finance lease liabilities | — |  | — |  | 12 |  | — |  | — |  |
| Reclassification from long-term debt to current portion of long-term debt | — |  | 257 |  | (257 | ) | — |  | — |  |
At December 31, 2018 | 3 231 |  | 229 |  | 13 890 |  | 477 |  | — |  |

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