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v3.22.2

Pension and Other Postretirement Benefits - Hierarchy of Fair Value of the Benefit Plan Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Jun. 30, 2021
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | $ 695,965 | $ 890,104
Level 1 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 26,451 | 43,777
Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 596,013 | 707,543
NAV [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 73,501 | 138,784
Corporate Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 379,324 | 443,948
Corporate Fixed Income Securities [Member] | Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 379,324 | 443,948
Mutual Funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 24,528 | 48,446
Mutual Funds [Member] | NAV [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 24,528 | 48,446
Blend Funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 48,973 | 90,338
Blend Funds [Member] | NAV [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 48,973 | 90,338
Common Stock [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 25,704 | 42,670
Common Stock [Member] | Level 1 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 25,704 | 42,670
US Government Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 130,064 | 149,514
US Government Securities [Member] | Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 130,064 | 149,514
Foreign Government Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 40,729 | 57,253
Foreign Government Securities [Member] | Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 40,729 | 57,253
Other Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 20,248 | 21,107
Other Fixed Income Securities [Member] | Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 20,248 | 21,107
Other [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 26,395 | 36,828
Other [Member] | Level 1 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | 747 | 1,107
Other [Member] | Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plans', Fair Value of Plan Assets | $ 25,648 | $ 35,721

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