Equity (Details) - USD ($) $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended					7 Months Ended	9 Months Ended
	Aug. 11, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Aug. 11, 2023	Sep. 30, 2022	Aug. 12, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 1,052.9	$ 991.5	$ (2,130.6)	$ (1,473.6)	$ (1,317.7)	$ (1,247.2)	$ (1,008.6)	$ 1,052.9	$ (1,317.7)
Net income (loss) attributable to Diebold Nixdorf, Incorporated	2,146.5	(26.5)			(49.8)			1,358.3	(432.1)
Net income (loss)	2,146.3	(25.8)	(677.3)	(111.5)	(50.5)	(199.1)	(183.9)	1,357.5	(433.5)
Other comprehensive loss	4.2	(35.6)	19.6	8.5	(22.7)	(44.5)	13.9	32.3	(53.3)
Share-based compensation issued			0.1	0.0	0.1	0.2	0.0
Share-based compensation expense			0.8	1.3	2.7	5.2	1.7
Treasury shares				(0.8)	(0.1)	0.0	(3.3)
Reclassification of guaranteed dividend to accrued liabilities	(341.7)
Balance	(2,130.6)	1,052.9	(1,473.6)	(1,371.1)	(1,247.2)	(1,008.6)	(837.0)	(1,371.1)	(837.0)
Equity warrants		0.0	20.1	20.1			0.0			$ 0.0	$ 20.1	$ 0.0
Common Stock, Value, Issued		0.4								$ 0.4
Common Stock [Member]
Balance	0.4	0.4	121.2	120.8	119.7	119.6	119.5	0.4	119.7
Share-based compensation issued			(0.4)	(1.0)	(0.1)	(0.1)	(1.2)
Balance	121.2	0.4	120.8	119.8	119.6	119.5	118.3	119.8	118.3
Additional Paid-in Capital [Member]
Balance	1,038.6	1,038.6	832.1	831.8	827.7	825.0	820.1	1,038.6	827.7
Share-based compensation issued			(0.5)	(1.0)	0.0	(0.3)	(1.2)
Share-based compensation expense	0.3		0.8	1.3	2.7	5.2	1.7
Balance	832.1	1,038.6	831.8	831.5	825.0	820.1	819.6	831.5	819.6
Retained Earnings [Member]
Balance	0.0	(26.5)	(2,194.9)	(1,517.8)	(1,254.5)	(1,204.7)	(1,005.5)	0.0	(1,254.5)
Net income (loss) attributable to Diebold Nixdorf, Incorporated	2,146.5	(26.5)	(677.1)	(111.1)	(49.8)	(199.2)	(183.1)	1,358.3	(432.1)
Balance	(2,194.9)	0.0	(1,517.8)	(1,406.7)	(1,204.7)	(1,005.5)	(822.4)	(1,406.7)	(822.4)
Treasury Stock, Common
Balance	0.0	0.0	(586.4)	(586.4)	(585.5)	(585.4)	(585.4)	0.0	(585.5)
Treasury shares				(0.8)	(0.1)	0.0	(3.3)
Balance	(586.4)	0.0	(586.4)	(585.6)	(585.4)	(585.4)	(582.1)	(585.6)	(582.1)
AOCI Attributable to Parent
Balance	0.0	(35.8)	(327.5)	(353.7)	(436.8)	(412.2)	(365.4)	0.0	(436.8)
Other comprehensive loss	7.5	(35.8)	26.2	6.3	(24.6)	(46.8)	13.1
Balance	(327.5)	0.0	(353.7)	(360.0)	(412.2)	(365.4)	(378.5)	(360.0)	(378.5)
Parent [Member]
Balance	1,039.0	976.7	(2,135.4)	(1,485.2)	(1,329.4)	(1,257.7)	(1,016.7)	1,039.0	(1,329.4)
Net income (loss) attributable to Diebold Nixdorf, Incorporated	2,146.5	(26.5)	(677.1)	(111.1)	(49.8)	(199.2)	(183.1)
Other comprehensive loss	7.5	(35.8)	26.2	6.3	(24.6)	(46.8)	13.1
Share-based compensation issued			0.1		0.1	0.2
Share-based compensation expense	0.3		0.8	1.3	2.7	5.2	1.7
Treasury shares				(0.8)	(0.1)	0.0	(3.3)
Balance	(2,135.4)	1,039.0	(1,485.2)	(1,380.9)	(1,257.7)	(1,016.7)	(845.1)	(1,380.9)	(845.1)
Noncontrolling Interest [Member]
Balance	13.9	14.8	4.8	11.6	11.7	10.5	8.1	13.9	11.7
Net income (loss)	(0.2)	0.7	(0.2)	(0.4)	(0.7)	0.1	(0.8)
Other comprehensive loss	(3.3)	0.2	(6.6)	2.2	1.9	2.3	0.8
Balance	$ 4.8	$ 13.9	$ 11.6	$ 9.8	$ 10.5	$ 8.1	$ 8.1	$ 9.8	$ 8.1