Supplementary Data Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and Equipment

	December 31,
	2020		2019
Furniture and equipment	$	654.6	$	694.3
Leasehold improvements	554.6		634.9
Internal-use computer software	470.1		422.0
Land and buildings	144.9		143.3
Gross property and equipment	1,824.2		1,894.5
Less: accumulated depreciation and amortization	(1,133.9)		(1,116.4)
Total property and equipment, net	$	690.3	$	778.1