Document and Entity Information [Abstract] Document Type Entity Registrant Name Entity Central Index Key Amendment Flag It represents the information pertaining to the first PEO William F. Austen. William F. Austen [Member] William F. Austen It represents the information pertaining to the first PEO Sean J. Kerins. Sean J. Kerins [Member] Sean J. Kerins It represents the information pertaining to the second PEO Michael J. Long. Michael J. Long [Member] Michael J. Long This member stands for changes in fair value to reflect excess fair value resulting from modifications to stock option and stock awards. Changes In Fair Value To Reflect Excess Fair Value Resulting From Modifications To Stock Option And Stock Awards [Member] The percent of annual cash incentive payout which is determined through absolute earnings per share performance measure. Annual Cash Incentive Payout Determination Through Absolute Earnings Per Share Performance Measure, Percent Annual cash incentive percentage to determine Absolute EPS The aggregate pension value, as reported in the Summary Compensation Table. Pension