Investments	12 Months Ended
May 31, 2018
Investments [Abstract]
Investments	Investments Investments at May 31, 2018 of $175.6 million include the cash surrender value of insurance policies of $154.0 million, equity method investments of $16.4 million and cost method investments of $5.2 million. Investments at May 31, 2017 of $164.8 million include the cash surrender value of insurance policies of $144.0 million, equity method investments of $15.8 million and cost method investments of $5.0 million. Investments are evaluated for impairment on an annual basis or when indicators of impairment exist. For fiscal years 2018, 2017 and 2016, no losses due to impairment were recorded.

Investments

12 Months Ended

May 31, 2018

Investments at May 31, 2018 of $175.6 million include the cash surrender value of insurance policies of $154.0 million, equity method investments of $16.4 million and cost method investments of $5.2 million. Investments at May 31, 2017 of $164.8 million include the cash surrender value of insurance policies of $144.0 million, equity method investments of $15.8 million and cost method investments of $5.0 million.

Investments are evaluated for impairment on an annual basis or when indicators of impairment exist. For fiscal years 2018, 2017 and 2016, no losses due to impairment were recorded.