Preneed Activities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 4,009,925
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	269,583
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(686,319)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	3,593,189
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		$ 3,801,977
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain		840,484
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss		(96,934)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value		4,545,527
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	45,521	51,002
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	29	795
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(2,109)	(283)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	43,441	51,514
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	29,079	29,881
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	15	28
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	29,094	29,909
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	1,357	170
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	6
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(129)	(2)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,228	174
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	1,424	1,407
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	58
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(110)	(15)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,314	1,450
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	299	274
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	1	2
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(50)	(10)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	250	266
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	4,350	4,843
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	0	4
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(2,009)	(1,024)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	2,341	3,823
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	1,674,835	1,648,785
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	210,790	624,349
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(272,253)	(56,092)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,613,372	2,217,042
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	44,694	34,787
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	10,484	19,617
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(13,826)	(898)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	41,352	53,506
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	145,601	129,486
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	5,905	42,171
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(29,682)	(9,819)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	121,824	161,838
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	933,390	875,828
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	39,591	140,893
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(184,846)	(10,116)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	788,135	1,006,605
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	1,129,188	1,025,327
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	2,767	12,560
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(181,305)	(18,675)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	950,650	1,019,212
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	187	187
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	1	1
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	188	188
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	1,655,781
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	179,276
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(107,430)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	1,727,627
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	726,801	662,125
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	9	115,939
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(97,686)	(3,171)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	629,124	774,893
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	308,184	230,926
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	6,918	161,125
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(9,379)	(114)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	305,723	391,937
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	317,884	408,762
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	317,884	408,762
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	302,912	292,888
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	172,349	128,197
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(365)	(5,353)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	474,896	415,732
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		1,594,701
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain		405,261
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss		(8,638)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value		1,991,324
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	5,665,706	5,396,678
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain	448,859	1,245,745
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss	(793,749)	(105,572)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	$ 5,320,816	$ 6,536,851