Supplemental Guarantor Information (Condensed Consolidating Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and cash equivalents	$ 652.7	$ 313.6	$ 326.1	$ 231.3
Short-term investments	64.1	39.9
Trade receivables, net	835.9	413.9
Intercompany receivables	0.0	0.0
Inventories	737.7	369.3
Deferred income taxes	0.0	168.8
Prepaid expenses	60.7	23.6
Refundable income taxes	85.2	18.0
Current assets held for sale	0.0	148.2
Other current assets	183.3	148.3
Total current assets	2,619.6	1,643.6
Securities and other investments	94.7	85.2
Property, plant and equipment, net	387.0	175.3	165.7
Goodwill	998.3	161.5	138.1
Deferred income taxes	309.5	65.3
Finance lease receivables	25.2	36.5
Intangible assets, net	772.9	67.5
Investment in subsidiary	0.0
Other assets	63.1	7.5
Assets	5,270.3	2,242.4
Notes payable	106.9	32.0
Accounts payable	560.5	281.7
Intercompany payable	0.0	0.0
Deferred revenue	404.2	229.2
Payroll and other benefits liabilities	172.5	76.5
Current liabilities held for sale	0.0	49.4
Other current liabilities	580.4	287.0
Total current liabilities	1,824.5	955.8
Long-term debt	1,691.4	606.2
Pensions and other benefits	279.4	195.6
Post-retirement and other benefits	17.8	18.7
Deferred income taxes	300.6	1.9
Other liabilities	87.7	28.7
Commitments and contingencies
Redeemable noncontrolling interests	44.1	0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	591.4	412.4
Noncontrolling interests	433.4	23.1
Total liabilities and equity	5,270.3	2,242.4
Parent Company [Member]
Cash and cash equivalents	138.4	20.3	14.7	4.1
Short-term investments	0.0	0.0
Trade receivables, net	119.0	140.4
Intercompany receivables	883.0	828.8
Inventories	110.5	115.9
Deferred income taxes	0.0	103.7
Prepaid expenses	14.7	16.4
Refundable income taxes	0.3	0.0
Current assets held for sale		139.2
Other current assets	3.2	15.5
Total current assets	1,269.1	1,380.2
Securities and other investments	94.7	85.2
Property, plant and equipment, net	102.7	121.1
Goodwill	55.5	45.1
Deferred income taxes	173.1	57.1
Finance lease receivables	0.0	0.0
Intangible assets, net	1.8	2.4
Investment in subsidiary	2,619.6
Other assets	2.9	1,404.6
Assets	4,319.4	3,095.7
Notes payable	30.9	21.5
Accounts payable	101.6	131.9
Intercompany payable	1,376.6	1,414.2
Deferred revenue	114.7	102.7
Payroll and other benefits liabilities	21.0	25.2
Current liabilities held for sale		48.9
Other current liabilities	156.1	116.3
Total current liabilities	1,800.9	1,860.7
Long-term debt	1,690.5	604.6
Pensions and other benefits	199.3	193.5
Post-retirement and other benefits	13.3	14.5
Deferred income taxes	13.4	0.0
Other liabilities	10.6	10.0
Redeemable noncontrolling interests	0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	591.4	412.4
Noncontrolling interests	0.0	0.0
Total liabilities and equity	4,319.4	3,095.7
Guarantor Subsidiaries [Member]
Cash and cash equivalents	2.3	7.9	2.5	2.0
Short-term investments	0.0	0.0
Trade receivables, net	0.0	4.3
Intercompany receivables	783.7	733.6
Inventories	16.2	17.8
Deferred income taxes	0.0	11.2
Prepaid expenses	0.8	0.7
Refundable income taxes	25.4	8.0
Current assets held for sale		0.0
Other current assets	1.6	3.5
Total current assets	830.0	787.0
Securities and other investments	0.0	0.0
Property, plant and equipment, net	9.0	10.0
Goodwill	0.0	0.0
Deferred income taxes	7.8	0.0
Finance lease receivables	4.8	8.1
Intangible assets, net	13.6	23.3
Investment in subsidiary	0.0
Other assets	0.1	0.2
Assets	865.3	828.6
Notes payable	1.3	1.3
Accounts payable	1.1	1.2
Intercompany payable	175.9	140.8
Deferred revenue	0.7	3.6
Payroll and other benefits liabilities	1.4	0.5
Current liabilities held for sale		0.0
Other current liabilities	3.9	2.6
Total current liabilities	184.3	150.0
Long-term debt	0.4	1.6
Pensions and other benefits	0.0	0.0
Post-retirement and other benefits	0.0	0.0
Deferred income taxes	0.0	6.4
Other liabilities	0.0	0.0
Redeemable noncontrolling interests	0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	680.6	670.6
Noncontrolling interests	0.0	0.0
Total liabilities and equity	865.3	828.6
Non-Guarantor Subsidiaries [Member]
Cash and cash equivalents	512.0	285.4	308.9	225.2
Short-term investments	64.1	39.9
Trade receivables, net	717.5	269.2
Intercompany receivables	480.1	539.1
Inventories	611.0	235.6
Deferred income taxes	0.0	53.9
Prepaid expenses	45.2	6.5
Refundable income taxes	84.9	18.0
Current assets held for sale		9.0
Other current assets	178.5	129.3
Total current assets	2,693.3	1,585.9
Securities and other investments	0.0	0.0
Property, plant and equipment, net	275.3	44.2
Goodwill	942.8	116.4
Deferred income taxes	128.6	14.6
Finance lease receivables	20.4	28.4
Intangible assets, net	757.5	41.8
Investment in subsidiary	9.3
Other assets	60.1	(7.3)
Assets	4,887.3	1,824.0
Notes payable	74.7	9.2
Accounts payable	458.4	148.6
Intercompany payable	594.3	546.5
Deferred revenue	288.8	122.9
Payroll and other benefits liabilities	150.1	50.8
Current liabilities held for sale		0.5
Other current liabilities	445.8	176.1
Total current liabilities	2,012.1	1,054.6
Long-term debt	0.5	0.0
Pensions and other benefits	80.1	2.1
Post-retirement and other benefits	4.5	4.2
Deferred income taxes	287.2	1.9
Other liabilities	77.1	18.7
Redeemable noncontrolling interests	44.1
Total Diebold Nixdorf, Incorporated shareholders' equity	1,948.3	719.4
Noncontrolling interests	433.4	23.1
Total liabilities and equity	4,887.3	1,824.0
Reclassifications And Eliminations [Member]
Cash and cash equivalents	0.0	0.0	$ 0.0	$ 0.0
Short-term investments	0.0	0.0
Trade receivables, net	(0.6)	0.0
Intercompany receivables	(2,146.8)	(2,101.5)
Inventories	0.0	0.0
Deferred income taxes	0.0	0.0
Prepaid expenses	0.0	0.0
Refundable income taxes	(25.4)	(8.0)
Current assets held for sale		0.0
Other current assets	0.0	0.0
Total current assets	(2,172.8)	(2,109.5)
Securities and other investments	0.0	0.0
Property, plant and equipment, net	0.0	0.0
Goodwill	0.0	0.0
Deferred income taxes	0.0	(6.4)
Finance lease receivables	0.0	0.0
Intangible assets, net	0.0	0.0
Investment in subsidiary	(2,628.9)
Other assets	0.0	(1,390.0)
Assets	(4,801.7)	(3,505.9)
Notes payable	0.0	0.0
Accounts payable	(0.6)	0.0
Intercompany payable	(2,146.8)	(2,101.5)
Deferred revenue	0.0	0.0
Payroll and other benefits liabilities	0.0	0.0
Current liabilities held for sale		0.0
Other current liabilities	(25.4)	(8.0)
Total current liabilities	(2,172.8)	(2,109.5)
Long-term debt	0.0	0.0
Pensions and other benefits	0.0	0.0
Post-retirement and other benefits	0.0	0.0
Deferred income taxes	0.0	(6.4)
Other liabilities	0.0	0.0
Redeemable noncontrolling interests	0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	(2,628.9)	(1,390.0)
Noncontrolling interests	0.0	0.0
Total liabilities and equity	$ (4,801.7)	$ (3,505.9)