Supplementary Data Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Property and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and Equipment

	December 31,
	2021		2020
Furniture and equipment	$	653.5	$	654.6
Leasehold improvements	571.3		554.6
Internal-use computer software	513.5		470.1
Land and buildings	139.1		144.9
Gross property and equipment	1,877.4		1,824.2
Less: accumulated depreciation and amortization	(1,201.6)		(1,133.9)
Total property and equipment, net	$	675.8	$	690.3