Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 21,376.0	$ 23,748.7	$ 20,820.8
Operating income (loss)	1,680.9	1,735.2	1,419.0
Depreciation and amortization expense	(270.7)	(290.6)	(191.2)
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Net sales	8,960.8	10,350.1	8,179.7
Operating income (loss)	846.8	931.7	697.3
Depreciation and amortization expense	(82.1)	(98.0)	(22.9)
Operating Segments | Small Business
Segment Reporting Information [Line Items]
Net sales	1,556.0	1,938.9	1,870.1
Operating income (loss)	177.3	186.8	167.7
Depreciation and amortization expense	(4.7)	(6.4)	(4.1)
Operating Segments | Public
Segment Reporting Information [Line Items]
Net sales	8,305.7	8,551.3	8,183.6
Operating income (loss)	735.0	681.7	606.7
Depreciation and amortization expense	(58.4)	(67.9)	(57.2)
Operating Segments | Other
Segment Reporting Information [Line Items]
Net sales	2,553.5	2,908.4	2,587.4
Operating income (loss)	142.1	130.7	115.8
Depreciation and amortization expense	(30.1)	(31.9)	(34.4)
Headquarters
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0
Operating income (loss)	(220.3)	(195.7)	(168.5)
Depreciation and amortization expense	$ (95.4)	$ (86.4)	$ (72.6)