Treasury Stock	6 Months Ended
Jun. 30, 2017
Equity [Abstract]
Treasury Stock	Treasury Stock On October 17, 2016, our Board of Directors authorized the repurchase by us of up to an aggregate of $300.0 million of our common stock by various means from time to time through and including December 31, 2021. We did not repurchase any shares of our common stock under this authorization during the six months ended June 30, 2017. At June 30, 2017, we had approximately $129.4 million remaining under this authorization for the repurchase of our common stock. During the first six months of 2017, we issued 321,652 treasury shares which had an average cost of $3.15 per share for restricted stock units that vested during the period. In accordance with the Silgan Holdings Inc. Amended and Restated 2004 Stock Incentive Plan, we repurchased 108,344 shares of our common stock at an average cost of $30.30 to satisfy minimum employee withholding tax requirements resulting from the vesting of such restricted stock units. We account for treasury shares using the first-in, first-out (FIFO) cost method. As of June 30, 2017, 64.8 million shares of our common stock were held in treasury.

Treasury Stock

On October 17, 2016, our Board of Directors authorized the repurchase by us of up to an aggregate of $300.0 million of our common stock by various means from time to time through and including December 31, 2021. We did not repurchase any shares of our common stock under this authorization during the six months ended June 30, 2017. At June 30, 2017, we had approximately $129.4 million remaining under this authorization for the repurchase of our common stock.

During the first six months of 2017, we issued 321,652 treasury shares which had an average cost of $3.15 per share for restricted stock units that vested during the period. In accordance with the Silgan Holdings Inc. Amended and Restated 2004 Stock Incentive Plan, we repurchased 108,344 shares of our common stock at an average cost of $30.30 to satisfy minimum employee withholding tax requirements resulting from the vesting of such restricted stock units.

We account for treasury shares using the first-in, first-out (FIFO) cost method. As of June 30, 2017, 64.8 million shares of our common stock were held in treasury.