Condensed Consolidated Balance Sheets - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Document Period End Date	Sep. 30, 2019
Current assets
Cash, cash equivalents and restricted cash	$ 252.3	$ 458.4
Short-term investments	8.2	33.5
Trade receivables, less allowances for doubtful accounts of $50.0 and $58.2, respectively	603.4	737.2
Inventories	591.0	610.1
Prepaid expenses	39.4	57.4
Other current assets	376.1	306.8
Total current assets	1,870.4	2,203.4
Securities and other investments	14.3	22.4
Property, plant and equipment, net of accumulated depreciation and amortization of $525.8 and $494.1, respectively	254.5	304.1
Goodwill	773.4	827.1
Deferred income taxes	198.2	243.9
Intangible assets, net	521.9	624.6
Right-of-use operating lease assets	169.1	0.0
Other assets	87.3	86.4
Total assets	3,889.1	4,311.9
Current liabilities
Notes payable	53.1	49.5
Accounts payable	485.0	509.5
Deferred revenue	318.6	378.2
Payroll and other benefits liabilities	187.1	184.3
Operating lease liabilities	63.2	0.0
Other current liabilities	439.1	446.9
Total current liabilities	1,546.1	1,568.4
Long-term debt	2,100.3	2,190.0
Pensions, post-retirement and other benefits	265.9	273.8
Deferred income taxes	177.3	221.6
Operating Lease, Liability, Noncurrent	106.7	0.0
Other liabilities	96.5	87.3
Commitments and contingencies
Redeemable noncontrolling interests	21.5	130.4
Diebold Nixdorf, Incorporated shareholders' equity
Preferred shares, no par value, 1,000,000 authorized shares, none issued	0.0	0.0
Common shares, $1.25 par value, 125,000,000 authorized shares, 92,179,738 and 91,345,451 issued shares, 76,626,259 and 76,174,025 outstanding shares, respectively	115.2	114.2
Additional capital	770.8	741.8
Retained earnings	(387.0)	(168.3)
Treasury shares, at cost (15,553,479 and 15,171,426 shares, respectively)	(571.8)	(570.4)
Accumulated other comprehensive loss	(377.1)	(303.7)
Total Diebold Nixdorf, Incorporated shareholders' equity	(449.9)	(186.4)
Noncontrolling interests	24.7	26.8
Total equity	(425.2)	(159.6)
Total liabilities, redeemable noncontrolling interests and equity	3,889.1	4,311.9
Customer relationships, net
Current assets
Intangible assets, net	452.0	533.1
Other intangible assets, net
Current assets
Intangible assets, net	69.9	91.5
Common Stock [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Common shares, $1.25 par value, 125,000,000 authorized shares, 92,179,738 and 91,345,451 issued shares, 76,626,259 and 76,174,025 outstanding shares, respectively		114.2
Total equity	115.2
Additional Paid-in Capital [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Additional capital		741.8
Total equity	770.8
Retained Earnings [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Retained earnings		(168.3)
Total equity	(387.0)
Treasury Stock [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Treasury shares, at cost (15,553,479 and 15,171,426 shares, respectively)		(570.4)
Total equity	(571.8)
AOCI Attributable to Parent
Diebold Nixdorf, Incorporated shareholders' equity
Accumulated other comprehensive loss		$ (303.7)
Total equity	$ (377.1)