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Preneed Activities Schedule of Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | $ 4,146,401 |
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 896,611 |
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (156,075) |
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 4,886,937 |
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 | 42,544 | 45,645
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 285 | 145
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (793) | (1,376)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 42,036 | 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 | 28,064 | 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 | 28,064 | 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 | 10,601 | 10,642
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 401 | 138
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (11) | (17)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 10,991 | 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 | 3,478 | 5,452
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 84 | 29
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (45) | (104)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 3,517 | 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 | 290 | 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 | 243 | 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 | 413 | 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 | (46) | (97)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 367 | 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 | 1,888,727 | 1,744,919
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 624,071 | 478,226
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (52,370) | (78,630)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 2,460,428 | 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 | 42,970 | 42,721
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 18,110 | 20,251
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (394) | (676)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 60,686 | 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 | 109,844 | 108,106
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 37,180 | 19,580
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (6,085) | (11,088)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 140,939 | 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 | 911,579 | 876,620
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 205,067 | 118,476
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (1,220) | (9,540)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 1,115,426 | 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 | 1,107,891 | 998,767
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 11,413 | 5,727
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (95,064) | (109,231)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 1,024,240 | 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 | 2,008,789 |
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 313,901 |
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (55,203) |
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 2,267,487 |
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 | 829,824 | 827,600
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 5,284 | 2,432
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (46,085) | (63,021)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 789,023 | 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 | 338,774 | 337,500
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 133,326 | 71,819
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | 0 | (642)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 472,100 | 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 | 407,209 | 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 | 407,209 | 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 | 432,982 | 412,482
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 175,291 | 169,825
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (9,118) | (7,109)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | 599,155 | 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 | 6,155,190 | 5,789,730
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain | 1,210,512 | 886,648
Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss | (211,278) | (281,582)
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value | $ 7,154,424 | $ 6,394,796

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