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Reportable Segment Information - (Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024
Assets [Abstract]
Total assets	$ 21,428,419	$ 20,479,170	$ 20,126,551
Operating Segments [Member] | Moving and Storage Consolidations [Member]
Assets [Abstract]
Total assets	18,460,371	17,522,952
Operating Segments [Member] | Property and Casualty Insurance [Member]
Assets [Abstract]
Total assets	562,065	535,032
Operating Segments [Member] | Life Insurance [Member]
Assets [Abstract]
Total assets	3,120,354	3,066,907
Intersegment Eliminations [Member]
Assets [Abstract]
Total assets	$ (714,371)	$ (645,721)

X

- Definition

Amount of asset recognized for present right to economic benefit.

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