Benefit Plans Benefit Plans - Allocation of Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 |
Private equity funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments | $ 1.6 | | $ 2.4 | |
Foreign Plan [Member] | Asset-backed Securities, Securitized Loans and Receivables | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
Foreign Plan [Member] | Asset-backed Securities, Securitized Loans and Receivables | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
Foreign Plan [Member] | Asset-backed Securities, Securitized Loans and Receivables | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | $ 0 | |
Foreign Plan [Member] | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 100% | | |
Actual | | 100% | 100% | |
Fair value of plan assets | | $ 325.3 | $ 394.4 | $ 394.1 |
Foreign Plan [Member] | Pension Benefits | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 243.5 | 312.4 | |
Foreign Plan [Member] | Pension Benefits | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 14.5 | 15.9 | |
Foreign Plan [Member] | Pension Benefits | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 67.3 | 66.1 | |
Foreign Plan [Member] | Pension Benefits | Cash and short-term investments | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 12.1 | 19.7 | |
Foreign Plan [Member] | Pension Benefits | Cash and short-term investments | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 11.4 | 19.7 | |
Foreign Plan [Member] | Pension Benefits | Cash and short-term investments | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Cash and short-term investments | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0.7 | 0 | |
Foreign Plan [Member] | Pension Benefits | Mutual funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0.7 | |
Foreign Plan [Member] | Pension Benefits | Mutual funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Mutual funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Mutual funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0.7 | |
Foreign Plan [Member] | Pension Benefits | U.S. small cap core | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | | |
Foreign Plan [Member] | Pension Benefits | U.S. small cap core | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. small cap core | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. small cap core | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. corporate bonds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. corporate bonds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. corporate bonds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | International corporate bonds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 59.6 | 58.8 | |
Foreign Plan [Member] | Pension Benefits | International corporate bonds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 50.1 | 58.8 | |
Foreign Plan [Member] | Pension Benefits | International corporate bonds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | International corporate bonds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 9.5 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. government | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. government | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. government | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | U.S. government | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Fixed and index funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 23.7 | 38.6 | |
Foreign Plan [Member] | Pension Benefits | Fixed and index funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 14.2 | 18.9 | |
Foreign Plan [Member] | Pension Benefits | Fixed and index funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Fixed and index funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 9.5 | 19.7 | |
Foreign Plan [Member] | Pension Benefits | Real estate | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 25.5 | 45.8 | |
Foreign Plan [Member] | Pension Benefits | Real estate | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Real estate | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 14.5 | 15.9 | |
Foreign Plan [Member] | Pension Benefits | Real estate | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 11 | 29.9 | |
Foreign Plan [Member] | Pension Benefits | Other common collective trusts | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 16.8 | | |
Foreign Plan [Member] | Pension Benefits | Other common collective trusts | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Other common collective trusts | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Other common collective trusts | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 16.8 | 0 | |
Foreign Plan [Member] | Pension Benefits | Multi-strategy hedge funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
Foreign Plan [Member] | Pension Benefits | Multi-strategy hedge funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
Foreign Plan [Member] | Pension Benefits | Multi-strategy hedge funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
Foreign Plan [Member] | Pension Benefits | Private equity funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Private equity funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Private equity funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Other Alternative Investments [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 17.2 | 14 | |
Foreign Plan [Member] | Pension Benefits | Other Alternative Investments [Member] | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0.3 | 0.4 | |
Foreign Plan [Member] | Pension Benefits | Other Alternative Investments [Member] | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | Other Alternative Investments [Member] | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 16.9 | 13.6 | |
Foreign Plan [Member] | Pension Benefits | International developed markets | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 170.4 | 216.8 | |
Foreign Plan [Member] | Pension Benefits | International developed markets | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 167.5 | 214.6 | |
Foreign Plan [Member] | Pension Benefits | International developed markets | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
Foreign Plan [Member] | Pension Benefits | International developed markets | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | $ 2.9 | $ 2.2 | |
Foreign Plan [Member] | Real estate | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 8% | | |
Actual | | 8% | 12% | |
Foreign Plan [Member] | Equity securities | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 52% | | |
Actual | | 52% | 55% | |
Foreign Plan [Member] | Debt securities | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 26% | | |
Actual | | 26% | 25% | |
Foreign Plan [Member] | Other | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 14% | | |
Actual | | 14% | 8% | |
U.S. Plans | Asset-backed Securities, Securitized Loans and Receivables | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | $ 0 | |
U.S. Plans | Asset-backed Securities, Securitized Loans and Receivables | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | $ 0 | |
U.S. Plans | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 100% | | |
Actual | | 100% | 100% | |
Fair value of plan assets | | $ 293 | $ 511.3 | $ 486.4 |
U.S. Plans | Pension Benefits | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 2.6 | 4.1 | |
U.S. Plans | Pension Benefits | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 290.4 | 507.2 | |
U.S. Plans | Pension Benefits | Cash and short-term investments | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 1.8 | 2.5 | |
U.S. Plans | Pension Benefits | Cash and short-term investments | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 1.8 | 2.5 | |
U.S. Plans | Pension Benefits | Cash and short-term investments | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Cash and short-term investments | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Mutual funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0.8 | 1.1 | |
U.S. Plans | Pension Benefits | Mutual funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0.8 | 1.1 | |
U.S. Plans | Pension Benefits | Mutual funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Mutual funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. small cap core | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. small cap core | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. small cap core | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. corporate bonds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. corporate bonds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. corporate bonds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | International corporate bonds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | International corporate bonds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | International corporate bonds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. government | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. government | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | U.S. government | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Fixed and index funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Fixed and index funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Fixed and index funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Real estate | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 20.1 | 17.2 | |
U.S. Plans | Pension Benefits | Real estate | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Real estate | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Real estate | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 20.1 | 17.2 | |
U.S. Plans | Pension Benefits | Other common collective trusts | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 263.1 | 485.9 | |
U.S. Plans | Pension Benefits | Other common collective trusts | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Other common collective trusts | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Other common collective trusts | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 263.1 | 485.9 | |
U.S. Plans | Pension Benefits | Multi-strategy hedge funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
U.S. Plans | Pension Benefits | Multi-strategy hedge funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
U.S. Plans | Pension Benefits | Multi-strategy hedge funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0 | |
U.S. Plans | Pension Benefits | Private equity funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 7.2 | 4.1 | |
U.S. Plans | Pension Benefits | Private equity funds | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Private equity funds | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Private equity funds | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 7.2 | 4.1 | |
U.S. Plans | Pension Benefits | Other Alternative Investments [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Other Alternative Investments [Member] | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Other Alternative Investments [Member] | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | Other Alternative Investments [Member] | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | International developed markets | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | International developed markets | Level 2 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | 0 | 0 | |
U.S. Plans | Pension Benefits | International developed markets | NAV | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | $ 0 | 0 | |
U.S. Plans | Pension Benefits | Asset-backed Securities, Securitized Loans and Receivables | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | 0.5 | |
U.S. Plans | Pension Benefits | Asset-backed Securities, Securitized Loans and Receivables | Level 1 | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Fair value of plan assets | | | $ 0.5 | |
U.S. Plans | Real estate | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 4% | | |
Actual | | 7% | 3% | |
U.S. Plans | Equity securities | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 41% | | |
Actual | | 43% | 46% | |
U.S. Plans | Debt securities | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 50% | | |
Actual | | 48% | 50% | |
U.S. Plans | Other | Pension Benefits | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Target | | 5% | | |
Actual | | 2% | 1% | |
Office [Member] | Real estate | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | | 22% | 31% | |
Industrial, Cash and Other [Member] | Real estate | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | | 41% | 33% | |
Russell 1000 Fund Large Cap Index Funds [Member] | Other common collective trusts | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | | 20% | | |
Buyout Private Equity Funds [Member] | Private equity funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | 26% | 33% | | |
Special Situation Private Equity and Debt Funds [Member] | Private equity funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | 17% | 19% | | |
Venture Private Equity Funds [Member] | Private equity funds | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | 24% | 29% | | |
Residential [Member] | Real estate | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | | 27% | 24% | |
Corporate Debt Securities [Member] | Other common collective trusts | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Actual | 36% | 42% | | |