Segment Information Segment Information By Revenue Type (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenues	$ (851.7)	$ (943.5)	$ (1,681.5)	$ (1,887.4)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Asset Impairment Charges	(5.4)	0.0	(60.6)	0.0
Amortization of acquired intangible assets			(36.1)	(39.8)
Restructuring and transformation expenses(4)	(78.3)	(17.1)	(78.3)	(23.1)
Operating profit (loss)	(91.5)	12.9	(174.9)	49.1
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	115.1	140.9	185.0	292.1
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Asset Impairment Charges	5.4	0.0	(60.6)	0.0
Amortization of acquired intangible assets	17.6	(19.9)	(36.1)	(39.8)
Restructuring and transformation expenses(4)	(78.3)	(30.4)	(78.3)	(53.6)
Net non-routine expense(5)	(37.2)	0.1	(39.6)	0.4
Operating profit (loss)	(5.3)	0.0	(11.7)	0.0
Retail Segment [Member]
Segment Reporting Information [Line Items]
Revenues	(255.8)	(305.0)	(517.5)	(609.4)
Retail Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	(255.8)	(305.0)	(517.5)	(609.4)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	34.6	39.1	58.8	81.3
Other Segments | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	(5.7)	0.0	(11.1)	0.0
Inventory Valuation and Obsolescence | Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net non-routine expense(5)	34.4
Service [Member]
Segment Reporting Information [Line Items]
Revenues	(525.4)	(586.7)	(1,051.6)	(1,160.3)
Service [Member] | Retail Segment [Member]
Segment Reporting Information [Line Items]
Revenues	(135.3)	(162.7)	(275.2)	(319.1)
Service [Member] | Other Segments
Segment Reporting Information [Line Items]
Revenues	(0.8)	0.0	(3.4)	0.0
Product [Member]
Segment Reporting Information [Line Items]
Revenues	(326.3)	(356.8)	(629.9)	(727.1)
Product [Member] | Retail Segment [Member]
Segment Reporting Information [Line Items]
Revenues	(120.5)	(142.3)	(242.3)	(290.3)
Product [Member] | Other Segments
Segment Reporting Information [Line Items]
Revenues	$ (4.9)	$ 0.0	$ (7.7)	$ 0.0