Year ended December 31 | |||||||||||
2015 | 2016 | 2017 | |||||||||
Opening balance of foreign currency translation account | $ | (13.5 | ) | $ | (15.2 | ) | $ | (15.2 | ) | ||
Foreign currency translation adjustments | (1.7 | ) | — | 0.7 | |||||||
Closing balance | (15.2 | ) | (15.2 | ) | (14.5 | ) | |||||
Opening balance of unrealized net loss on cash flow hedges | (11.5 | ) | (17.6 | ) | (9.5 | ) | |||||
Net gain (loss) on cash flow hedges(i) | (39.2 | ) | (2.2 | ) | 27.9 | ||||||
Reclassification of net loss (gain) on cash flow hedges to operations(ii) | 33.1 | 10.3 | (10.6 | ) | |||||||
Closing balance(iii) | (17.6 | ) | (9.5 | ) | 7.8 | ||||||
Actuarial gains (losses) on pension and non-pension post-employment benefit plans (note 19) | (7.0 | ) | 17.1 | (1.2 | ) | ||||||
Reclassification of actuarial losses (gains) to deficit | 7.0 | (17.1 | ) | 1.2 | |||||||
Settlement loss (note 19) | — | — | (17.0 | ) | |||||||
Reclassification of settlement loss to deficit (note 19) | — | — | 17.0 | ||||||||
Closing balance | — | — | — | ||||||||
Accumulated other comprehensive loss | $ | (32.8 | ) | $ | (24.7 | ) | $ | (6.7 | ) |
(i) | Net of income tax expense of $2.8 for 2017 (2016 — $1.2 income tax recovery; 2015 — $2.8 income tax recovery). |
(ii) | Net of income tax recovery of $0.3 for 2017 (2016 — $1.1 income tax expense; 2015 — $2.9 income tax expense). |
(iii) | Net of income tax expense of $1.2 as of December 31, 2017 (December 31, 2016 — $1.3 income tax recovery; December 31, 2015 — $1.2 income tax recovery). |