Condensed Consolidated Balance Sheets - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Document Period End Date	Jun. 30, 2019
Current assets
Cash, cash equivalents and restricted cash	$ 259.8	$ 458.4
Short-term investments	13.1	33.5
Trade receivables, less allowances for doubtful accounts of $54.4 and $58.2, respectively	712.5	737.2
Inventories	607.4	610.1
Prepaid expenses	52.8	57.4
Other current assets	291.6	306.8
Total current assets	1,937.2	2,203.4
Securities and other investments	17.6	22.4
Property, plant and equipment, net of accumulated depreciation and amortization of $517.8 and $494.0, respectively	277.2	304.1
Goodwill	823.6	827.1
Deferred income taxes	214.5	243.9
Intangible assets, net	570.9	624.6
Operating Lease, Right-of-Use Asset	165.3	0.0
Other assets	98.2	86.4
Total assets	4,104.5	4,311.9
Current liabilities
Notes payable	42.2	49.5
Accounts payable	509.0	509.5
Deferred revenue	368.9	378.2
Payroll and other benefits liabilities	165.6	184.3
Operating Lease, Liability, Current	62.7	0.0
Other current liabilities	420.7	446.9
Total current liabilities	1,569.1	1,568.4
Long-term debt	2,174.1	2,190.0
Pensions, post-retirement and other benefits	272.0	273.8
Deferred income taxes	177.3	221.6
Operating Lease, Liability, Noncurrent	103.2	0.0
Other liabilities	91.1	87.3
Commitments and contingencies
Redeemable noncontrolling interests	21.7	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, 92,132,662 and 91,345,451 issued shares, 76,745,677 and 76,174,025 outstanding shares, respectively	115.2	114.2
Additional capital	765.3	741.8
Retained earnings	(351.3)	(168.3)
Treasury shares, at cost (15,386,985 and 15,150,152 shares, respectively)	(571.8)	(570.4)
Accumulated other comprehensive loss	(286.2)	(303.7)
Total Diebold Nixdorf, Incorporated shareholders' equity	(328.8)	(186.4)
Noncontrolling interests	24.8	26.8
Total equity	(304.0)	(159.6)
Total liabilities, redeemable noncontrolling interests and equity	4,104.5	4,311.9
Customer relationships, net
Current assets
Intangible assets, net	492.3	533.1
Other intangible assets, net
Current assets
Intangible assets, net	78.6	91.5
Common Stock [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Common shares, $1.25 par value, 125,000,000 authorized shares, 92,132,662 and 91,345,451 issued shares, 76,745,677 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	765.3
Retained Earnings [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Retained earnings		(168.3)
Total equity	(351.3)
Treasury Stock [Member]
Diebold Nixdorf, Incorporated shareholders' equity
Treasury shares, at cost (15,386,985 and 15,150,152 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	$ (286.2)