Note 8 - Goodwill and Intangible Assets - Summary of Changes in Goodwill (Details) - USD ($) $ in Thousands		3 Months Ended
	Jun. 01, 2021	Mar. 31, 2022
Goodwill		$ 4,331,200
Goodwill, Acquired During Period		270,700
Purchase accounting reclassifications		200
Impairment charge	$ 0	(1,700)
Foreign currency translation adjustment		(52,700)
Goodwill		3,957,600
Discontinued Operations, Disposed of by Sale [Member]
Disposition or held for sale		(116,500)
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Disposition or held for sale		(473,600)
Insurance [Member]
Goodwill		1,454,800
Goodwill, Acquired During Period		270,700
Purchase accounting reclassifications		200
Impairment charge		0
Foreign currency translation adjustment		(12,900)
Goodwill		1,712,800
Insurance [Member] | Discontinued Operations, Disposed of by Sale [Member]
Disposition or held for sale		0
Insurance [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Disposition or held for sale		0
Energy and Specialized Markets [Member]
Goodwill		2,401,000
Goodwill, Acquired During Period		0
Purchase accounting reclassifications		0
Impairment charge		0
Foreign currency translation adjustment		(39,700)
Goodwill		2,244,800
Energy and Specialized Markets [Member] | Discontinued Operations, Disposed of by Sale [Member]
Disposition or held for sale		(116,500)
Energy and Specialized Markets [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Disposition or held for sale		0
Financial Services [Member]
Goodwill		475,400
Goodwill, Acquired During Period		0
Purchase accounting reclassifications		0
Impairment charge		(1,700)
Foreign currency translation adjustment		(100)
Goodwill		0
Financial Services [Member] | Discontinued Operations, Disposed of by Sale [Member]
Disposition or held for sale		0
Financial Services [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Disposition or held for sale		$ (473,600)