Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 20,998.7	$ 21,376.0	$ 23,748.7
Cost of sales	16,396.3	16,723.6	19,062.1
Gross profit	4,602.4	4,652.4	4,686.6
Other segment items	2,951.1	2,971.5	2,951.4
Operating income (loss)	1,651.3	1,680.9	1,735.2
Depreciation and amortization expense	275.3	270.7	290.6
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Net sales	8,837.2	8,960.8	10,350.1
Cost of sales	6,737.7	6,833.0	8,170.8
Gross profit	2,099.5	2,127.8	2,179.3
Other segment items	1,220.0	1,281.0	1,247.6
Operating income (loss)	879.5	846.8	931.7
Depreciation and amortization expense	76.5	82.1	98.0
Operating Segments | Small Business
Segment Reporting Information [Line Items]
Net sales	1,523.5	1,556.0	1,938.9
Cost of sales	1,170.6	1,194.3	1,544.9
Gross profit	352.9	361.7	394.0
Other segment items	171.9	184.4	207.2
Operating income (loss)	181.0	177.3	186.8
Depreciation and amortization expense	3.4	4.7	6.4
Operating Segments | Public
Segment Reporting Information [Line Items]
Net sales	8,157.7	8,305.7	8,551.3
Cost of sales	6,498.5	6,638.2	6,918.0
Gross profit	1,659.2	1,667.5	1,633.3
Other segment items	913.3	932.5	951.6
Operating income (loss)	745.9	735.0	681.7
Depreciation and amortization expense	55.4	58.4	67.9
Operating Segments | Other
Segment Reporting Information [Line Items]
Net sales	2,480.3	2,553.5	2,908.4
Cost of sales	1,989.5	2,058.1	2,428.4
Gross profit	490.8	495.4	480.0
Other segment items	378.7	353.3	349.3
Operating income (loss)	112.1	142.1	130.7
Depreciation and amortization expense	28.1	30.1	31.9
Headquarters
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0
Gross profit	0.0	0.0	0.0
Other segment items	267.2	220.3	195.7
Operating income (loss)	(267.2)	(220.3)	(195.7)
Depreciation and amortization expense	$ 111.9	$ 95.4	$ 86.4