Change in Fair Value from Last Day of Prior Fiscal Year to Vesting Date of Unvested Prior-Fiscal Year Equity Awards that Vested During Fiscal Year for PEO 2 ($) [Member] Average Fair Value at Last Day of Prior Fiscal Year of Equity Awards Forfeited During Fiscal Year for Non-PEO NEOs ($) [Member] Exclusion of Average Stock Awards and Option Awards for Non- PEO NEOs ($) [Member] Inclusion of Pension Service Cost for PEO 2 ($) [Member] Change in Fair Value from Last Day of Prior Fiscal Year to Last Day of Fiscal Year of Unvested Prior- Fiscal Year Equity Awards for PEO 2 ($) [Member] Total - Average Inclusion of Equity Values for Non-‍PEO NEOs ($) [Member] Vesting-Date Fair Value of Equity Awards Granted During Fiscal Year that Vested During Fiscal Year for PEO 2 ($) [Member] Exclusion of Change in Pension Value for PEO 2 ($) [Member] Average Change in Fair Value from Last Day of Prior Fiscal Year to Last Day of Fiscal Year of Unvested Prior- Fiscal Year Equity Awards for Non- PEO NEOs ($) [Member] Fair Value at Last Day of Prior Fiscal Year of Equity Awards Forfeited During Fiscal Year for PEO 2 ($) [Member] Total - Inclusion of Equity Values for PEO 2 ($) [Member] Year-End Fair Value of Equity Awards Granted During Fiscal Year That Remained Unvested as of Last Day of Fiscal Year for PEO 2 ($) [Member] Exclusion of Average Change in Pension Value for Non-PEO NEOs ($) [Member] Average Change in Fair Value from Last Day of Prior Fiscal Year to Vesting Date of Unvested Prior- Fiscal Year Equity Awards that Vested During Fiscal Year for Non-‍PEO NEOs ($) [Member] Inclusion of Equity Values for PEO 2 ($) [Member] Exclusion of Stock Awards and Option Awards for PEO 2 ($) [Member] Inclusion of Average Equity Values for Non-‍PEO NEOs ($) [Member] Inclusion of Average Pension Service Cost for Non-PEO NEOs ($) [Member] Average Vesting- Date Fair Value of Equity Awards Granted During Fiscal Year that Vested During Fiscal Year for Non-PEO NEOs ($) [Member] Average Year-End Fair Value of Equity Awards Granted During Fiscal Year That Remained Unvested as of Last Day of Fiscal Year for Non-PEO NEOs ($) [Member] Parmentier [Member] Williams [Member]