Income Taxes	6 Months Ended
Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes: The effective income tax rate for the three-month and six-month periods ended June 30, 2014 was 21.7% and 20.5%, respectively, compared to 20.6% and 22.7% for the three-month and six-month periods ended June 30, 2013. The Company’s effective income tax rate fluctuates based on, among other factors, our level and location of income. The difference between the U.S. federal statutory income tax rate and our effective income tax rate for the 2014 and 2013 periods is mainly due to the impact of earnings from outside the U.S. Our effective income tax rate for the three-month and six-month periods ended June 30, 2014 was impacted by $8.2 million of restructuring and other charges (approximately $5.2 million after income taxes) as more fully described in Note 13. Our effective income tax rate for the six-month period ended June 30, 2014 was also impacted by $17.0 million of pre-tax charges (approximately $11.1 million after income taxes) in connection with a reduction of high cost supply capacity of certain aluminum alkyl products (see Note 13), and an actuarial loss of $15.4 million (approximately $9.8 million after income taxes) related to one of our U.S. defined benefit pension plans and our supplemental executive retirement plan (see Note 10).

Income Taxes

6 Months Ended

Jun. 30, 2014

Income Taxes:

The effective income tax rate for the three-month and six-month periods ended June 30, 2014 was 21.7% and 20.5%, respectively, compared to 20.6% and 22.7% for the three-month and six-month periods ended June 30, 2013. The Company’s effective income tax rate fluctuates based on, among other factors, our level and location of income. The difference between the U.S. federal statutory income tax rate and our effective income tax rate for the 2014 and 2013 periods is mainly due to the impact of earnings from outside the U.S. Our effective income tax rate for the three-month and six-month periods ended June 30, 2014 was impacted by $8.2 million of restructuring and other charges (approximately $5.2 million after income taxes) as more fully described in Note 13. Our effective income tax rate for the six-month period ended June 30, 2014 was also impacted by $17.0 million of pre-tax charges (approximately $11.1 million after income taxes) in connection with a reduction of high cost supply capacity of certain aluminum alkyl products (see Note 13), and an actuarial loss of $15.4 million (approximately $9.8 million after income taxes) related to one of our U.S. defined benefit pension plans and our supplemental executive retirement plan (see Note 10).