Segment Information - Products and Services (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net Sales from External Customer [Line Items]
Net sales	$ 21,376.0	$ 23,748.7	$ 20,820.8
Percentage of Total Net Sales	100.00%	100.00%	100.00%
Notebooks/Mobile Devices
Net Sales from External Customer [Line Items]
Net sales	$ 4,690.5	$ 6,179.7	$ 6,659.4
Percentage of Total Net Sales	21.90%	26.00%	32.00%
Netcomm Products
Net Sales from External Customer [Line Items]
Net sales	$ 3,185.4	$ 2,729.7	$ 1,950.9
Percentage of Total Net Sales	14.90%	11.50%	9.40%
Collaboration
Net Sales from External Customer [Line Items]
Net sales	$ 1,909.7	$ 2,394.8	$ 2,218.8
Percentage of Total Net Sales	8.90%	10.10%	10.70%
Data Storage and Servers
Net Sales from External Customer [Line Items]
Net sales	$ 2,240.7	$ 2,479.0	$ 2,044.9
Percentage of Total Net Sales	10.50%	10.40%	9.80%
Desktops
Net Sales from External Customer [Line Items]
Net sales	$ 1,069.1	$ 1,284.9	$ 1,203.6
Percentage of Total Net Sales	5.00%	5.40%	5.80%
Other Hardware
Net Sales from External Customer [Line Items]
Net sales	$ 2,607.2	$ 3,022.9	$ 2,692.0
Percentage of Total Net Sales	12.30%	12.70%	12.90%
Total Hardware
Net Sales from External Customer [Line Items]
Net sales	$ 15,702.6	$ 18,091.0	$ 16,769.6
Percentage of Total Net Sales	73.50%	76.10%	80.60%
Software
Net Sales from External Customer [Line Items]
Net sales	$ 3,799.3	$ 3,684.9	$ 2,802.4
Percentage of Total Net Sales	17.80%	15.50%	13.50%
Services
Net Sales from External Customer [Line Items]
Net sales	$ 1,761.3	$ 1,842.0	$ 1,126.1
Percentage of Total Net Sales	8.20%	7.80%	5.40%
Other
Net Sales from External Customer [Line Items]
Net sales	$ 112.8	$ 130.8	$ 122.7
Percentage of Total Net Sales	0.50%	0.60%	0.50%