Preneed Activities Schedule of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 3,915,064
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	431,331
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(417,785)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	3,928,610
Estimate of Fair Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss		$ 4,013,319
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain		371,897
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss		(521,853)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value		3,863,363
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	45,888	45,084
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	29	22
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(1,900)	(2,033)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	44,017	43,073
Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	32,663	30,200
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	32,663	30,200
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	164	175
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(18)	(18)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	146	157
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	5,437	1,420
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(241)	(101)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	5,196	1,319
Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	291	294
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(56)	(52)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	235	242
Fair Value, Inputs, Level 2 [Member] | Preferred Stock securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	409	4,144
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(119)	(2,340)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	290	1,804
Fair Value, Inputs, Level 1 [Member] | US Common Stock Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,761,457	1,707,240
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	320,413	283,423
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(158,404)	(208,523)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,923,466	1,782,140
Fair Value, Inputs, Level 1 [Member] | Canada Common Stock Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	41,604	47,821
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	13,673	11,765
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(2,522)	(11,117)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	52,755	48,469
Fair Value, Inputs, Level 1 [Member] | Other International Common Stock Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	98,592	123,440
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	11,225	10,561
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(12,775)	(19,009)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	97,042	114,992
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	903,221	917,686
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	85,740	64,895
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(83,033)	(112,374)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	905,928	870,207
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,025,338	1,135,815
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	251	1,231
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(158,717)	(166,286)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	866,872	970,760
Reported Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,886,245
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	213,438
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(111,625)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,988,058
Reported Value Measurement [Member] | Commingled funds - Fixed inc [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	827,398	730,940
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	2
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(99,689)	(89,246)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	727,709	641,696
Reported Value Measurement [Member] | Commingled funds - Equity [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	336,627	309,893
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	39,959	40,820
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(6,135)	(3,846)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	370,451	346,867
Reported Value Measurement [Member] | Money Market Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	336,387	325,562
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	0	0
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	336,387	325,562
Reported Value Measurement [Member] | Private Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	385,833	307,275
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	173,479	179,491
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(5,801)	(1,091)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	553,511	485,675
Reported Value Measurement [Member] | Reported At Net Asset Value [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss		1,673,670
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain		220,313
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss		(94,183)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value		1,799,800
Estimate of Fair Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	5,801,309	5,686,989
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	644,769	592,210
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(529,410)	(616,036)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	$ 5,916,668	$ 5,663,163