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share-based compensation - TELUS Corp restricted stock units activity (Details) - Restricted stock units without market performance conditions | 12 Months Ended
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Dec. 31, 2018 CAD ($) EquityInstruments | Dec. 31, 2017 CAD ($) EquityInstruments
Number of restricted stock units - Non-vested |  |
Outstanding, beginning of period | 3,481,916 | 3,390,979
Issued - initial award | 1,769,092 | 1,825,688
In lieu of dividends | 208,503 | 206,715
Vested | (1,963,722) | (1,766,680)
Forfeited and cancelled | (302,269) | (174,786)
Outstanding, end of period | 3,193,520 | 3,481,916
Number of restricted stock units - vested |  |
Outstanding, beginning of period | 32,848 | 29,108
In lieu dividends | 359 | 455
Vested | 1,963,722 | 1,766,680
Settled in cash | (1,933,546) | (1,698,008)
Forfeited and cancelled |  | (65,387)
Outstanding, end of period | 63,383 | 32,848
Weighted average grant-date fair value |  |
Outstanding, beginning of period, non-vested | $ | $ 41.87 | $ 41.71
Outstanding, beginning of period, vested | $ | 41.00 | 38.09
Issued - initial award | $ | 45.72 | 43.56
In lieu of dividends | $ | 46.32 | 43.98
Vested | $ | 40.34 | 43.73
Settled in cash | $ | 40.08 | 43.63
Forfeited and cancelled | $ | 43.16 | 42.88
Outstanding, end of period, non-vested | $ | 44.85 | 41.87
Outstanding, end of period, vested | $ | $ 44.89 | $ 41.00

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