Preneed Activities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	$ (210,810)
Available-for-sale Securities, Fair Value	4,297,238
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	642,572
Debt Securities, Available-for-sale, Amortized Cost	3,865,476
Estimate of Fair Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses		$ (521,853)
Available-for-sale Securities, Fair Value		3,863,363
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		371,897
Debt Securities, Available-for-sale, Amortized Cost		4,013,319
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(1,376)	(2,033)
Available-for-sale Securities, Fair Value	44,414	43,073
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	145	22
Debt Securities, Available-for-sale, Amortized Cost	45,645	45,084
Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	0	0
Available-for-sale Securities, Fair Value	31,896	30,200
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Amortized Cost	31,896	30,200
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(17)	(18)
Available-for-sale Securities, Fair Value	10,763	157
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	138	0
Debt Securities, Available-for-sale, Amortized Cost	10,642	175
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(104)	(101)
Available-for-sale Securities, Fair Value	5,377	1,319
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	29	0
Debt Securities, Available-for-sale, Amortized Cost	5,452	1,420
Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(51)	(52)
Available-for-sale Securities, Fair Value	240	242
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Amortized Cost	291	294
Fair Value, Inputs, Level 2 [Member] | Preferred Stock securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(97)	(2,340)
Available-for-sale Securities, Fair Value	320	1,804
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Amortized Cost	417	4,144
Fair Value, Inputs, Level 1 [Member] | US Common Stock Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(78,630)	(208,523)
Available-for-sale Securities, Fair Value	2,144,515	1,782,140
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	478,226	283,423
Debt Securities, Available-for-sale, Amortized Cost	1,744,919	1,707,240
Fair Value, Inputs, Level 1 [Member] | Canada Common Stock Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(676)	(11,117)
Available-for-sale Securities, Fair Value	62,296	48,469
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	20,251	11,765
Debt Securities, Available-for-sale, Amortized Cost	42,721	47,821
Fair Value, Inputs, Level 1 [Member] | Other International Common Stock Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(11,088)	(19,009)
Available-for-sale Securities, Fair Value	116,598	114,992
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	19,580	10,561
Debt Securities, Available-for-sale, Amortized Cost	108,106	123,440
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(9,540)	(112,374)
Available-for-sale Securities, Fair Value	985,556	870,207
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	118,476	64,895
Debt Securities, Available-for-sale, Amortized Cost	876,620	917,686
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(109,231)	(166,286)
Available-for-sale Securities, Fair Value	895,263	970,760
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5,727	1,231
Debt Securities, Available-for-sale, Amortized Cost	998,767	1,135,815
Reported Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(70,772)
Available-for-sale Securities, Fair Value	2,097,558
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	244,076
Debt Securities, Available-for-sale, Amortized Cost	1,924,254
Reported Value Measurement [Member] | Commingled funds - Fixed inc [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(63,021)	(89,246)
Available-for-sale Securities, Fair Value	767,011	641,696
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2,432	2
Debt Securities, Available-for-sale, Amortized Cost	827,600	730,940
Reported Value Measurement [Member] | Commingled funds - Equity [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(642)	(3,846)
Available-for-sale Securities, Fair Value	408,677	346,867
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	71,819	40,820
Debt Securities, Available-for-sale, Amortized Cost	337,500	309,893
Reported Value Measurement [Member] | Money Market Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	0	0
Available-for-sale Securities, Fair Value	346,672	325,562
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Amortized Cost	346,672	325,562
Reported Value Measurement [Member] | Private Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(7,109)	(1,091)
Available-for-sale Securities, Fair Value	575,198	485,675
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	169,825	179,491
Debt Securities, Available-for-sale, Amortized Cost	412,482	307,275
Reported Value Measurement [Member] | Reported At Net Asset Value [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses		(94,183)
Available-for-sale Securities, Fair Value		1,799,800
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		220,313
Debt Securities, Available-for-sale, Amortized Cost		1,673,670
Estimate of Fair Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(281,582)	(616,036)
Available-for-sale Securities, Fair Value	6,394,796	5,663,163
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	886,648	592,210
Debt Securities, Available-for-sale, Amortized Cost	$ 5,789,730	$ 5,686,989