CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Aug. 12, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income (loss)	$ 19.1	$ 1,357.5	$ (585.6)	$ (78.1)
Other comprehensive income (loss), net of tax:
Translation adjustment and foreign currency hedges	14.4	21.0	(35.3)	(53.6)
Pension and other post-retirement benefits:
Prior service credit (cost) recognized during the period (net of tax of $(0.2) in the Successor Period and $0.2, $— and $— in the Predecessor Periods, respectively)	0.4	(0.2)	2.4	0.0
Net actuarial gains (losses) recognized during the period (net of tax of $2.6 in the Successor Period and $(4.9), $— and $23.2 in the Predecessor Periods, respectively)	(6.5)	4.2	38.5	76.0
Net actuarial gains (losses) occurring during the period (net of tax of $— in the Successor Period and $1.1, $— and $2.0 in the Predecessor Periods, respectively)	0.0	(1.0)	2.3	7.5
Net actuarial gains (losses) recognized due to settlement (net of tax of $— in Successor Period and $1.1, $— and $(0.4) in the Predecessor Periods, respectively)	0.1	(0.9)	10.2	(0.7)
Acquired benefit plans and other (net of tax of $— in Successor Period and $—, $— and $— in the Predecessor Periods, respectively)	0.0	0.0	0.0	0.1
Currency impact (net of tax of $0.1 in the Successor Period and $(1.3), $— and $(0.4) in the Predecessor Periods, respectively)	(0.1)	1.1	(1.4)	(0.6)
Total pension and other postretirement benefits, net of tax	(6.1)	3.2	52.0	82.3
Other	(0.4)	0.0	2.8	(0.9)
Other comprehensive income (loss), net of tax	7.8	32.3	24.4	35.0
Comprehensive income (loss)	26.9	1,389.8	(561.2)	(43.1)
Less: comprehensive income (loss) attributable to noncontrolling interests	1.5	(8.5)	1.7	1.3
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	25.4	1,398.3	(562.9)	(44.4)
Foreign exchange forward contracts
Interest rate hedges:
Total hedges, net of tax	(0.1)	4.7	0.0	0.7
Interest rate swap
Interest rate hedges:
Net income (loss) recognized in other comprehensive income (net of tax of $— in the Successor Period and $—, $0.7 and $3.4 in the Predecessor Periods, respectively)	0.0	3.4	5.5	8.6
Less: reclassification adjustments for amounts recognized in net income (loss) (net of tax of $— in the Successor Period and $—, $0.1 and $0.8 in the Predecessor Periods, respectively)	0.0	0.0	0.6	2.1
Total hedges, net of tax	$ 0.0	$ 3.4	$ 4.9	$ 6.5