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Equity (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016
Equity |
Schedule of common stock and additional paid-in capital activity |
| Three Months Ended |  | Six Months Ended
| June 30, 2016 |  | June 30, 2016
|  |  | Weighted Average |  |  |  | Weighted Average
| Shares |  | Amount |  | Exercise Price |  | Shares |  | Amount |  | Exercise Price
| (in millions, except share and per share amounts)
Stock-based compensation | 11,611 |  | $ | 8.1 |  |  |  |  | 150,162 |  | $ | 10.2 |  |  |
Stock options exercised | 269,575 |  |  | 13.6 |  | $ | 52.96 |  | 614,745 |  |  | 30.1 |  | $ | 49.01
Cumulative effect of change in accounting for stock-based compensation |  |  |  | — |  |  |  |  |  |  |  | 1.0 |  |  |
Total | 281,186 |  | $ | 21.7 |  |  |  |  | 764,907 |  | $ | 41.3 |  |  |
Summary of the status of the Company's unvested restricted stock grants and restricted stock units and changes during the period |
|  |  |  | Weighted
|  |  |  | Average Grant
Unvested Shares |  | Shares |  | Date Fair Value
Unvested at January 1, 2016 |  | 900,410 |  | $ | 63.26
Granted(1) |  | 524,746 |  |  | 69.20
Vested |  | (13,317) |  |  | 69.63
Cancelled |  | (19,114) |  |  | 64.41
Unvested at June 30, 2016 |  | 1,392,725 |  | $ | 65.43
Shares reserved for future grants (all plans) |  | 1,862,538 |  |  |
(1) 512,895 RSUs, including 190,175 performance-based RSUs, and 11,851 restricted stock grants.
Schedule of accumulated other comprehensive loss |
|  |  |  | Pension and |  | Accumulated
| Foreign Currency |  | Postretirement |  | Other
| Translation |  | Benefit Adjustments, |  | Comprehensive
| (Loss) Gain |  | Net of Tax |  | (Loss) Income
| (in millions)
Balance as of January 1, 2016 | $ | (74.2) |  | $ | (25.5) |  | $ | (99.7)
Current-period change |  | 10.9 |  |  | — |  |  | 10.9
Balance as of June 30, 2016 | $ | (63.3) |  | $ | (25.5) |  | $ | (88.8)

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