The following is a summary of net changes in Accumulated OCI by component and net of tax for the three months ended June 30, 2018: | | | | | | | | | | | | | | | | | (Amounts in millions) | Foreign Currency Translation | | Cash Flow Hedges | | Defined Benefit Pension and Postretirement Plans | | Total | Balance as of March 31, 2018 | $ | (43.4 | ) | | $ | 13.2 |
| | $ | (255.2 | ) | | $ | (285.4 | ) | Other comprehensive loss before reclassifications | (97.6 | ) | | — |
| | — |
| | (97.6 | ) | Amounts reclassified from Accumulated OCI | — |
| | (0.3 | ) | | 6.0 |
| | 5.7 |
| Net other comprehensive income (loss) | (97.6 | ) | | (0.3 | ) | | 6.0 |
| | (91.9 | ) | Balance as of June 30, 2018 | $ | (141.0 | ) | | $ | 12.9 |
| | $ | (249.2 | ) | | $ | (377.3 | ) |
The following is a summary of net changes in Accumulated OCI by component and net of tax for the six months ended June 30, 2018: | | | | | | | | | | | | | | | | | (Amounts in millions) | Foreign Currency Translation | | Cash Flow Hedges | | Defined Benefit Pension and Postretirement Plans | | Total | Balance as of December 30, 2017 | $ | (82.5 | ) | | $ | 14.5 |
| | $ | (261.0 | ) | | $ | (329.0 | ) | Other comprehensive loss before reclassifications | (58.5 | ) | | (0.8 | ) | | — |
| | (59.3 | ) | Amounts reclassified from Accumulated OCI | — |
| | (0.8 | ) | | 11.8 |
| | 11.0 |
| Net other comprehensive income (loss) | (58.5 | ) | | (1.6 | ) | | 11.8 |
| | (48.3 | ) | Balance as of June 30, 2018 | $ | (141.0 | ) | | $ | 12.9 |
| | $ | (249.2 | ) | | $ | (377.3 | ) |
The following is a summary of net changes in Accumulated OCI by component and net of tax for the three months ended July 1, 2017: | | | | | | | | | | | | | | | | | (Amounts in millions) | Foreign Currency Translation | | Cash Flow Hedges | | Defined Benefit Pension and Postretirement Plans | | Total | Balance as of April 1, 2017 | $ | (179.6 | ) | | $ | 15.0 |
| | $ | (285.8 | ) | | $ | (450.4 | ) | Other comprehensive income before reclassifications | 49.4 |
| | — |
| | — |
| | 49.4 |
| Amounts reclassified from Accumulated OCI | — |
| | (0.4 | ) | | 4.4 |
| | 4.0 |
| Net other comprehensive income (loss) | 49.4 |
| | (0.4 | ) | | 4.4 |
| | 53.4 |
| Balance as of July 1, 2017 | $ | (130.2 | ) | | $ | 14.6 |
| | $ | (281.4 | ) | | $ | (397.0 | ) |
The following is a summary of net changes in Accumulated OCI by component and net of tax for the six months ended July 1, 2017: | | | | | | | | | | | | | | | | | (Amounts in millions) | Foreign Currency Translation | | Cash Flow Hedges | | Defined Benefit Pension and Postretirement Plans | | Total | Balance as of December 31, 2016 | $ | (217.7 | ) | | $ | 9.2 |
| | $ | (290.0 | ) | | $ | (498.5 | ) | Other comprehensive income before reclassifications | 87.5 |
| | 6.1 |
| | — |
| | 93.6 |
| Amounts reclassified from Accumulated OCI | — |
| | (0.7 | ) | | 8.6 |
| | 7.9 |
| Net other comprehensive income | 87.5 |
| | 5.4 |
| | 8.6 |
| | 101.5 |
| Balance as of July 1, 2017 | $ | (130.2 | ) | | $ | 14.6 |
| | $ | (281.4 | ) | | $ | (397.0 | ) |
|