Supplementary Data Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2023

Property and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and Equipment

	December 31,
	2023		2022
Furniture and equipment	$	632.8	$	640.8
Leasehold improvements	507.0		528.6
Internal-use computer software	585.1		581.4
Land and buildings	136.7		131.4
Gross property and equipment	1,861.6		1,882.2
Less: accumulated depreciation and amortization	(1,224.9)		(1,244.8)
Total property and equipment, net	$	636.7	$	637.4