Preneed Activities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
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
Estimate of Fair Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses		$ (96,934)
Available-for-sale Securities, Fair Value		4,545,527
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		840,484
Debt Securities, Available-for-sale, Amortized Cost		3,801,977
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(2,033)	(283)
Available-for-sale Securities, Fair Value	43,073	51,514
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	22	795
Debt Securities, Available-for-sale, Amortized Cost	45,084	51,002
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	30,200	29,909
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	28
Debt Securities, Available-for-sale, Amortized Cost	30,200	29,881
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(18)	(2)
Available-for-sale Securities, Fair Value	157	174
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	6
Debt Securities, Available-for-sale, Amortized Cost	175	170
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	(101)	(15)
Available-for-sale Securities, Fair Value	1,319	1,450
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	58
Debt Securities, Available-for-sale, Amortized Cost	1,420	1,407
Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(52)	(10)
Available-for-sale Securities, Fair Value	242	266
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	2
Debt Securities, Available-for-sale, Amortized Cost	294	274
Fair Value, Inputs, Level 2 [Member] | Preferred Stock securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(2,340)	(1,024)
Available-for-sale Securities, Fair Value	1,804	3,823
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	4
Debt Securities, Available-for-sale, Amortized Cost	4,144	4,843
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	(208,523)	(56,092)
Available-for-sale Securities, Fair Value	1,782,140	2,217,042
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	283,423	624,349
Debt Securities, Available-for-sale, Amortized Cost	1,707,240	1,648,785
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	(11,117)	(898)
Available-for-sale Securities, Fair Value	48,469	53,506
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	11,765	19,617
Debt Securities, Available-for-sale, Amortized Cost	47,821	34,787
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	(19,009)	(9,819)
Available-for-sale Securities, Fair Value	114,992	161,838
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	10,561	42,171
Debt Securities, Available-for-sale, Amortized Cost	123,440	129,486
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(112,374)	(10,116)
Available-for-sale Securities, Fair Value	870,207	1,006,605
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	64,895	140,893
Debt Securities, Available-for-sale, Amortized Cost	917,686	875,828
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(166,286)	(18,675)
Available-for-sale Securities, Fair Value	970,760	1,019,212
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,231	12,560
Debt Securities, Available-for-sale, Amortized Cost	1,135,815	1,025,327
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses		0
Available-for-sale Securities, Fair Value		188
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		1
Debt Securities, Available-for-sale, Amortized Cost		187
Reported Value Measurement [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
Reported Value Measurement [Member] | Commingled funds - Fixed inc [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(89,246)	(3,171)
Available-for-sale Securities, Fair Value	641,696	774,893
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2	115,939
Debt Securities, Available-for-sale, Amortized Cost	730,940	662,125
Reported Value Measurement [Member] | Commingled funds - Equity [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(3,846)	(114)
Available-for-sale Securities, Fair Value	346,867	391,937
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	40,820	161,125
Debt Securities, Available-for-sale, Amortized Cost	309,893	230,926
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	325,562	408,762
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Amortized Cost	325,562	408,762
Reported Value Measurement [Member] | Private Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(1,091)	(5,353)
Available-for-sale Securities, Fair Value	485,675	415,732
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	179,491	128,197
Debt Securities, Available-for-sale, Amortized Cost	307,275	292,888
Reported Value Measurement [Member] | Reported At Net Asset Value [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses		(8,638)
Available-for-sale Securities, Fair Value		1,991,324
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		405,261
Debt Securities, Available-for-sale, Amortized Cost		1,594,701
Estimate of Fair Value Measurement [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Gross Unrealized Losses	(616,036)	(105,572)
Available-for-sale Securities, Fair Value	5,663,163	6,536,851
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	592,210	1,245,745
Debt Securities, Available-for-sale, Amortized Cost	$ 5,686,989	$ 5,396,678