75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 999009 - Disclosure - Anchoring link:presentationLink link:calculationLink link:definitionLink Fair value at last day of prior year of equity awards forfeited during year. Fair Value At Last Day Of Prior Year Of Equity Awards Forfeited During Year [Member] Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year Gregory S Smith. Gregory S Smith [Member] Gregory S. Smith Average inclusion of pension service cost. Average Inclusion of Pension Service Cost [Member] Average Inclusion of Pension Service Cost Vesting-date fair value of equity awards granted during year that vested during year. Vesting-date Fair Value Of Equity Awards Granted During Year That Vested During Year [Member] Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year Amendment Flag Average year-end fair value of equity awards granted during year that remained unvested as of last day of year. Average Year-end Fair Value Of Equity Awards Granted During Year That Remained Unvested As Of Last Day Of Year [Member] Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year Document Type Year-end fair value of equity awards granted during year that remained unvested as of last day of year. Year-end Fair Value Of Equity Awards Granted During Year That Remained Unvested As Of Last Day Of Year [Member] Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day Entity Central Index Key Average change in fair value from last day of prior year to last day of year of unvested equity awards. Average Change In Fair Value From Last Day Of Prior Year To Last Day Of Year Of Unvested Equity Awards [Member] Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards Total inclusion of equity values. Total Inclusion of Equity Values [Member] Total - Inclusion of Equity Values e vesting-date fair value of equity awards granted during year that vested during year. Average Vesting-date Fair Value Of Equity Awards Granted During Year That Vested During Year [Member] Average Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year Total average inclusion of equity values. Total Average Inclusion Of Equity Values [Member] Total - Average Inclusion of Equity Values Value of dividends or other earnings paid on equity awards not otherwise included. Value Of Dividends Or Other Earnings Paid On Equity Awards Not Otherwise Included [Member] Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included Exclusion of change in pension value. Exclusion of Change in Pension Value [Member] Exclusion of Change in Pension Value Cover [Abstract] Mark E Jagiela. Mark E Jagiela [Member] Mark E. Jagiela Change in fair value from last day of prior year to last day of year of unvested equity awards. Change In Fair Value From Last Day Of Prior Year To Last Day Of Year Of Unvested Equity Awards [Member] Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards Change in fair value from last day of prior year to vesting date of unvested equity awards that vested during year. Change In Fair Value From Last Day Of Prior Year To Vesting Date Of Unvested Equity Awards That Vested During Year [Member] Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year Average inclusion of equity values. Average Inclusion Of Equity Values [Member] Average Inclusion of Equity Values Average value of dividends or other earnings paid on equity awards not otherwise included. Average Value Of Dividends Or Other Earnings Paid On Equity Awards Not Otherwise Included [Member] Average Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included Inclusion of pension service cost. Inclusion of Pension Service Cost [Member] Inclusion of Pension Service Cost Entity Registrant Name Average exclusion of change in pension value. Average Exclusion of Change in Pension Value [Member] Average Exclusion of Change in Pension Value Average change in fair value from last day of prior year to vesting date of unvested equity awards that vested during year. Average Change In Fair Value From Last Day Of Prior Year To Vesting Date Of Unvested Equity Awards That Vested During Year [Member] Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year Average fair value at last day of prior year of equity awards forfeited during year. Average Fair Value At Last Day Of Prior Year Of Equity Awards Forfeited During Year [Member] Average Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year Average exclusion of stock awards and option awards. Average Exclusion of Stock Awards And Option Awards [Member] Average Exclusion of Stock Awards and Option Awards Exclusion of stock awards and option awards. Exclusion of Stock Awards and Option Awards [Member] Exclusion of Stock Awards and Option Awards