Preneed Activities Schedule of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 3,916,674
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	857,033
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(190,421)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	4,583,286
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		$ 3,865,476
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain		642,572
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss		(210,810)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value		4,297,238
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	42,605	45,645
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	90	145
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(1,285)	(1,376)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	41,410	44,414
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	31,337	31,896
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	31,337	31,896
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	10,808	10,642
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	105	138
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(16)	(17)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	10,897	10,763
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	5,269	5,452
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	23	29
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(95)	(104)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	5,197	5,377
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	286	291
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	(47)	(51)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	239	240
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	420	417
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	(72)	(97)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	348	320
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	1,725,582	1,744,919
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	646,399	478,226
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(57,808)	(78,630)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	2,314,173	2,144,515
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	41,553	42,721
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	20,424	20,251
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(866)	(676)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	61,111	62,296
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	122,152	108,106
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	35,834	19,580
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(10,413)	(11,088)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	147,573	116,598
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	892,823	876,620
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	149,405	118,476
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(5,188)	(9,540)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,037,040	985,556
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	1,043,839	998,767
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	4,753	5,727
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(114,631)	(109,231)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	933,961	895,263
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	1,959,755
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	251,682
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(75,059)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	2,136,378
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	823,946	827,600
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	1,692	2,432
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(66,005)	(63,021)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	759,633	767,011
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	336,779	337,500
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	90,667	71,819
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(208)	(642)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	427,238	408,677
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	369,276	346,672
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	369,276	346,672
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	429,754	412,482
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	159,323	169,825
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(8,846)	(7,109)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	580,231	575,198
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		1,924,254
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain		244,076
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss		(70,772)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value		2,097,558
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	5,876,429	5,789,730
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	1,108,715	886,648
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(265,480)	(281,582)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	$ 6,719,664	$ 6,394,796