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OTHER DISCLOSURES. | 12 Months Ended
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Dec. 31, 2020
Other Disclosures [Abstract] |
OTHER DISCLOSURES | OTHER DISCLOSURES. RETIREMENT PLANS. Compensation and related costs includes expense recognized for our defined contribution retirement plans of $117.0 million in 2020, $104.6 million in 2019, and $105.6 million in 2018. SUPPLEMENTAL SAVINGS PLAN. Through the 2020 plan year, the Supplemental Savings Plan provides certain senior officers the opportunity to defer receipt of up to 100% of their cash incentive compensation earned for a respective calendar year during which services are provided. The amounts deferred are adjusted in accordance with the hypothetical investments chosen by the officer from a list of mutual funds. The officer can initially defer these amounts for a period of two to 15 years. Certain senior officers elected to defer $105.8 million in 2020, $107.5 million in 2019, and $118.9 million in 2018. Beginning with the plan's 2021 year, the maximum that certain senior officers can defer will be the lesser of 50% of their annual cash incentive earned or $2 million. Additionally, the officers can now defer amounts for a minimum of five years rather than the two years prior to the plan's 2021 year.

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