Supplemental Guarantor Information Supplemental Guarantor Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 451.3		$ 652.7	$ 335.5		$ 313.6
Short-term investments	76.9		64.1
Trade receivables, net	930.7		835.9
Intercompany receivables	0.0		0.0
Inventories	779.3		737.7
Prepaid expenses	64.1		60.7
Income taxes	131.3		85.2
Other current assets	208.0		183.3
Total current assets	2,641.6		2,619.6
Securities and other investments	93.7		94.7
Property, plant and equipment, net	391.9		387.0
Goodwill	1,082.4		998.3			161.5
Deferred income taxes	359.9		309.5
Finance lease receivables	18.4		25.2
Intangible assets, net	778.1		772.9
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0.0		0.0
Other assets	89.5		63.1
Assets	5,455.5		5,270.3
Liabilities, Current [Abstract]
Notes payable	112.5		106.9
Accounts payable	602.4		560.5
Intercompany payable	0.0		0.0
Deferred revenue	426.1		404.2
Payroll and other benefits liabilities	176.4		172.5
Other current liabilities	565.0		580.4
Total current liabilities	1,882.4		1,824.5
Long-term debt	1,787.5		1,691.4
Pensions, post-retirement and other benefits	296.9		297.2
Deferred income taxes	281.0		300.6
Other liabilities	134.0		87.7
Commitments and contingencies
Redeemable noncontrolling interests	449.0		44.1
Total Diebold Nixdorf, Incorporated shareholders' equity	587.2	$ 533.1	591.4	578.3	$ 595.6	412.4
Noncontrolling interests	37.5	$ 34.8	433.4	23.7	$ 23.5	23.1
Total liabilities, redeemable noncontrolling interests and equity	5,455.5		5,270.3
Reportable Legal Entities [Member] | Parent Company [Member]
Cash and cash equivalents	6.5		138.4	60.8		20.3
Short-term investments	0.0		0.0
Trade receivables, net	144.1		119.0
Intercompany receivables	757.2		883.0
Inventories	164.5		110.5
Prepaid expenses	9.6		14.7
Income taxes	0.0		0.3
Other current assets	7.4		3.2
Total current assets	1,089.3		1,269.1
Securities and other investments	93.7		94.7
Property, plant and equipment, net	96.7		102.7
Goodwill	55.5		55.5
Deferred income taxes	241.0		173.1
Finance lease receivables	0.0		0.0
Intangible assets, net	0.9		1.8
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	2,719.5		2,619.6
Other assets	30.3		2.9
Assets	4,326.9		4,319.4
Liabilities, Current [Abstract]
Notes payable	83.7		30.9
Accounts payable	99.7		101.6
Intercompany payable	1,320.5		1,376.6
Deferred revenue	99.7		114.7
Payroll and other benefits liabilities	15.5		21.0
Other current liabilities	97.1		156.1
Total current liabilities	1,716.2		1,800.9
Long-term debt	1,786.9		1,690.5
Pensions, post-retirement and other benefits	211.2		212.6
Deferred income taxes	13.3		13.4
Other liabilities	12.1		10.6
Redeemable noncontrolling interests	0.0		0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	587.2		591.4
Noncontrolling interests	0.0		0.0
Total liabilities, redeemable noncontrolling interests and equity	4,326.9		4,319.4
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Cash and cash equivalents	2.2		2.3	2.7		7.9
Short-term investments	0.0		0.0
Trade receivables, net	0.3		0.0
Intercompany receivables	929.7		783.7
Inventories	0.2		16.2
Prepaid expenses	0.9		0.8
Income taxes	4.1		25.4
Other current assets	1.1		1.6
Total current assets	938.5		830.0
Securities and other investments	0.0		0.0
Property, plant and equipment, net	3.2		9.0
Goodwill	0.0		0.0
Deferred income taxes	7.8		7.8
Finance lease receivables	3.4		4.8
Intangible assets, net	10.7		13.6
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0.0		0.0
Other assets	0.0		0.1
Assets	963.6		865.3
Liabilities, Current [Abstract]
Notes payable	0.6		1.3
Accounts payable	0.2		1.1
Intercompany payable	179.1		175.9
Deferred revenue	0.3		0.7
Payroll and other benefits liabilities	0.9		1.4
Other current liabilities	2.0		3.9
Total current liabilities	183.1		184.3
Long-term debt	0.2		0.4
Pensions, post-retirement and other benefits	0.0		0.0
Deferred income taxes	0.0		0.0
Other liabilities	0.0		0.0
Redeemable noncontrolling interests	0.0		0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	780.3		680.6
Noncontrolling interests	0.0		0.0
Total liabilities, redeemable noncontrolling interests and equity	963.6		865.3
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member]
Cash and cash equivalents	442.6		512.0	272.0		285.4
Short-term investments	76.9		64.1
Trade receivables, net	786.3		717.5
Intercompany receivables	1,944.3		480.1
Inventories	614.6		611.0
Prepaid expenses	53.6		45.2
Income taxes	132.0		84.9
Other current assets	199.5		178.5
Total current assets	4,249.8		2,693.3
Securities and other investments	0.0		0.0
Property, plant and equipment, net	292.0		275.3
Goodwill	1,026.9		942.8
Deferred income taxes	111.1		128.6
Finance lease receivables	15.0		20.4
Intangible assets, net	766.5		757.5
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	15.9		9.3
Other assets	59.2		60.1
Assets	6,536.4		4,887.3
Liabilities, Current [Abstract]
Notes payable	28.2		74.7
Accounts payable	502.5		458.4
Intercompany payable	2,131.6		594.3
Deferred revenue	326.1		288.8
Payroll and other benefits liabilities	160.0		150.1
Other current liabilities	470.7		445.8
Total current liabilities	3,619.1		2,012.1
Long-term debt	0.4		0.5
Pensions, post-retirement and other benefits	85.7		84.6
Deferred income taxes	267.7		287.2
Other liabilities	121.9		77.1
Redeemable noncontrolling interests	449.0		44.1
Total Diebold Nixdorf, Incorporated shareholders' equity	1,955.1		1,948.3
Noncontrolling interests	37.5		433.4
Total liabilities, redeemable noncontrolling interests and equity	6,536.4		4,887.3
Consolidation, Eliminations [Member]
Cash and cash equivalents	0.0		0.0	$ 0.0		$ 0.0
Short-term investments	0.0		0.0
Trade receivables, net	0.0		(0.6)
Intercompany receivables	(3,631.2)		(2,146.8)
Inventories	0.0		0.0
Prepaid expenses	0.0		0.0
Income taxes	(4.8)		(25.4)
Other current assets	0.0		0.0
Total current assets	(3,636.0)		(2,172.8)
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		0.0
Finance lease receivables	0.0		0.0
Intangible assets, net	0.0		0.0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(2,735.4)		(2,628.9)
Other assets	0.0		0.0
Assets	(6,371.4)		(4,801.7)
Liabilities, Current [Abstract]
Notes payable	0.0		0.0
Accounts payable	0.0		(0.6)
Intercompany payable	(3,631.2)		(2,146.8)
Deferred revenue	0.0		0.0
Payroll and other benefits liabilities	0.0		0.0
Other current liabilities	(4.8)		(25.4)
Total current liabilities	(3,636.0)		(2,172.8)
Long-term debt	0.0		0.0
Pensions, post-retirement and other benefits	0.0		0.0
Deferred income taxes	0.0		0.0
Other liabilities	0.0		0.0
Redeemable noncontrolling interests	0.0		0.0
Total Diebold Nixdorf, Incorporated shareholders' equity	(2,735.4)		(2,628.9)
Noncontrolling interests	0.0		0.0
Total liabilities, redeemable noncontrolling interests and equity	$ (6,371.4)		$ (4,801.7)