Maximum notional value of derivative positions of the total pension fund's value

20.00%

Pension Benefits [Member]

Over a three- to five-year period, the objectives are for the pension plan’s annualized total return to: Exceed the assumed rate of return on plan assets, Exceed the annualized total return of a customized index consisting of a mixture of Standard & Poor’s 500 Index; Russell 2500 Index, Morgan Stanley Capital International Europe, Australia, Far East Index; Morgan Stanley Capital International Emerging Markets Index, Barclays Capital Long Credit Index, Barclays Capital Long Government/Credit Index, National Council of Real Estate Investment Fiduciaries Index, and U.S. Treasury Bills plus 5%, and Rank in the upper 50% of a universe of composite pension funds.

Pension Benefits [Member] | Domestic Equity [Member]

Investment asset allocation target percentage of total plan assets [Abstract]

Equity holdings of a single company must not exceed 10% of the manager’s portfolio. A minimum of 25 stocks should be owned. Equity holdings in a single sector should not exceed the lesser of three times the sector’s weighting in the Standard & Poor’s 500 Index or 35% of the portfolio. Equity holdings should represent at least 90% of the portfolio. Marketable common stocks, preferred stocks convertible on common stocks, and fixed income securities convertible into common stocks are the only permissible equity investments. Securities in foreign entities denominate in U.S. dollars are limited to 10%. Securities denominated in currencies other than U.S. dollars are not permitted. The purchase of securities on margin and short sales is prohibited.

Investment asset allocation target percentage of total plan assets [Abstract]

19.00%

Pension Benefits [Member] | International Equity [Member]

18.00%

Pension Benefits [Member] | International Equity Developed Markets [Member]

Equity holdings of a single company should not exceed 5% of the manager’s portfolio. A minimum of 30 stocks should be owned. Equity holdings in a single sector should not exceed 35%. A minimum of 50% of the countries within the MSCI EAFE Index should be represented within the portfolio. The allocation to an individual country should not exceed the lesser of 30% or 5 times the country’s weighting within the MSCI EAFE Index. The purchase of securities on margin and short sales is prohibited. Currency hedging decisions are at the discretion of the investment manager.

Pension Benefits [Member] | International Equity Emerging Markets [Member]

Equity holdings in any single company should not exceed 10% of the manager’s portfolio. A minimum of 30 individual stocks should be owned. Equity holdings of a single industry should not exceed 25%. Equity investments must represent at least 75% of the manager’s portfolio. A minimum of three countries should be represented within the manager’s portfolio. Liquid securities which are not readily marketable may represent no more than 10% of the manager’s portfolio. The purchase of securities on margin and short sales is prohibited. Currency hedging decisions are at the discretion of the investment manager.

Pension Benefits [Member] | Real estate funds [Member]

Investment asset allocation target percentage of total plan assets [Abstract]

Real estate funds should be invested primarily in direct equity positions, with debt and other investments representing less than 25% of the fund. Leverage should be no more than 70% of the market value of the fund. Investments should be focused on existing income-producing properties, with land and development properties representing less than 40% of the fund.

8.00%

Pension Benefits [Member] | Hedge fund-of-funds [Member]

Investment asset allocation target percentage of total plan assets [Abstract]

The fund should be invested in a minimum of 20 individual partnerships. No individual partnership should exceed 10% of the fund-of-funds. The fund should be diversified across several different “styles” of partnerships, including event-driven strategies, fixed income arbitrage and trading, and other arbitrage strategies. The fund generally should not be invested in emerging markets, short-term only, traditional Commodity Trading Advisor’s or derivative-only strategies.

Investment asset allocation target percentage of total plan assets [Abstract]

2.00%

Pension Benefits [Member] | Return Seeking [Member]

Target plan allocations, minimum

42.00%

Target plan allocations, maximum

47.00%

52.00%

Pension Benefits [Member] | Fixed income- long government/credit [Member]

Investment asset allocation target percentage of total plan assets [Abstract]

Only U.S. Dollar denominated assets permitted, including U.S. government and agency securities, corporate securities, structured securities, other interest bearing securities, and short-term investments. At least 85% of the debt securities should be investment grade securities (BBB- by Standard & Poor’s or Baa3 by Moody’s) or higher. Debt holdings of a single issue or issuer must not exceed 5% of the manager’s portfolio. Aggregate net notional exposure of futures, options, and swaps must not exceed 30% of the manager's portfolio. Manager will only execute swaps with counterparties whose credit rating is A2/A or better.Margin purchases or leverage is prohibited.

18.00%

Pension Benefits [Member] | Fixed income- long credit [Member]

Investment asset allocation target percentage of total plan assets [Abstract]

Permitted assets include U.S. government and agency securities, corporate securities, mortgage-backed securities, investment-grade private placements, surplus notes, trust preferred, e-caps, and hybrids, money-market securities, and senior and subordinated debt. At least 90% of securities must be U.S. Dollar denominated. At least 70% of the securities must be investment credit. Maximum position size of 5% or A rated securities and 3% for BBB rated securities.

Investment asset allocation target percentage of total plan assets [Abstract]

35.00%

Pension Benefits [Member] | Liability Hedging [Member]

Target plan allocations, minimum

48.00%