| Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 |
|---|---|---|---|---|---|---|---|
Canadian Natural Gas Pipelines | |||||||
U.S. Natural Gas Pipelines | |||||||
Mexico Natural Gas Pipelines | |||||||
Income Tax (Recovery)/Expense (Note 16) | |||||||
Weighted Average Number of Common Shares (millions) (Note 20) | |||||||
Basic (in shares) | |||||||
872,000 | 759,000 | 709,000 | 708,000 | 707,000 | 705,000 | 702,000 | 691,000 |
Diluted (in shares) | |||||||
874,000 | 760,000 | 709,000 | 710,000 | 708,000 | 706,000 | 703,000 | 692,000 |