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Preneed Activities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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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

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