Treasury Stock	6 Months Ended
Jun. 30, 2015
Equity [Abstract]
Treasury Stock	Treasury Stock On February 9, 2015, we commenced a “modified Dutch auction” tender offer to purchase up to $200.0 million of our common stock. Pursuant to the tender offer, which expired on March 10, 2015, we purchased 2,766,354 shares of our common stock from our stockholders on March 17, 2015 at a price of $58.50 per share, for a total purchase price of $161.8 million, exclusive of $0.7 million of fees and expenses. During the three months ended June 30, 2015, we repurchased an additional 139,421 shares of our common stock at an average price per share of $54.71, for a total purchase price of $7.6 million. As a result, at June 30, 2015, we had $106.0 million remaining under an authorization from our Board of Directors for the repurchase of our common stock from time to time through and including December 31, 2019. During the first six months of 2015, we issued 125,846 treasury shares which had an average cost of $6.30 per share for restricted stock units that vested during the period. In accordance with the Silgan Holdings Inc. 2004 Stock Incentive Plan, we repurchased 44,122 shares of our common stock at an average cost of $57.53 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, 2015, 27,176,938 shares of our common stock were held in treasury.

Treasury Stock

On February 9, 2015, we commenced a “modified Dutch auction” tender offer to purchase up to $200.0 million of our common stock. Pursuant to the tender offer, which expired on March 10, 2015, we purchased 2,766,354 shares of our common stock from our stockholders on March 17, 2015 at a price of $58.50 per share, for a total purchase price of $161.8 million, exclusive of $0.7 million of fees and expenses. During the three months ended June 30, 2015, we repurchased an additional 139,421 shares of our common stock at an average price per share of $54.71, for a total purchase price of $7.6 million. As a result, at June 30, 2015, we had $106.0 million remaining under an authorization from our Board of Directors for the repurchase of our common stock from time to time through and including December 31, 2019.

During the first six months of 2015, we issued 125,846 treasury shares which had an average cost of $6.30 per share for restricted stock units that vested during the period. In accordance with the Silgan Holdings Inc. 2004 Stock Incentive Plan, we repurchased 44,122 shares of our common stock at an average cost of $57.53 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, 2015, 27,176,938 shares of our common stock were held in treasury.