PERPETUAL CARE TRUSTS - Cost and Market Value Associated with Assets Held in Perpetual Care Trusts (Parenthetical) (Detail) - Perpetual care trusts - Variable Interest Entity, Primary Beneficiary $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($) Extension	Dec. 31, 2021 USD ($) Extension
Debt Securities, Available-for-sale [Line Items]
Number of potential lockup period extensions | Extension	4	4
Lockup extension period	1 year	1 year
Unfunded investment commitments to private credit funds, callable at any time	$ 98.4	$ 67.3
Level 3
Debt Securities, Available-for-sale [Line Items]
Direct loans, net of unamortized origination fees	$ 81.3	$ 79.7
Minimum
Debt Securities, Available-for-sale [Line Items]
Fixed income funds and equity funds, redemption period	1 day	1 day
Private credit funds, lockup periods	0 years	0 years
Maximum
Debt Securities, Available-for-sale [Line Items]
Fixed income funds and equity funds, redemption period	30 days	30 days
Private credit funds, lockup periods	14 years	15 years