Divestitures (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended	12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations, Allowance For Doubtful Accounts Receivable, Current						$ 4.0	$ 2.1
Anticipated Equity Method Investment Majority Ownership Percentage						51.00%
Equity Method Investment Majority Interest Ownership Percentage						60.00%
Gain (Loss) on Disposition of Assets						$ (1.0)	(0.3)	$ 0.6
Cost of sales
Income tax (benefit) expense							93.9	9.6
Income (loss) from discontinued operations, net of tax							143.7	15.9
Income from discontinued operations, net of tax						0.0	143.7	15.9
Impairment of assets						$ 3.1	9.8	18.9
Legacy Diebold United Kingdom [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses		$ 5.0
Legacy Diebold United Kingdom And Electronic Security Business in Mexico [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Assets	$ 2.2
Aevi International GmbH And Diebold Nixdorf AG China Subsidiaries [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses			$ 27.7
Diebold Nixdorf AG China Subsidiaries [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncash or Part Noncash Divestiture, Amount of Consideration Received			$ 44.7
Aisino Wincor Joint Venture [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity Method Investment, Ownership Percentage						43.60%
NA Electronic Security [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses				$ 350.0
Divestiture Agreed Upon Contingent Payment						10.00%
Services and software							16.3	221.5
Systems							8.5	127.0
Net sales							24.8	348.5
Cost of sales
Services and software							15.1	181.1
Systems							6.9	102.2
Cost of sales							22.0	283.3
Gross profit							2.8	65.2
Selling and administrative expense							4.8	39.7
Income (loss) from discontinued operations before taxes							(2.0)	25.5
Income tax (benefit) expense							(0.7)	9.6
Gain (loss) on sale of discontinued operations before taxes						$ 239.5	239.5	0.0
Income tax (benefit) expense							94.5	0.0
Gain (loss) on sale of discontinued operations, net of tax							145.0	0.0
Income (loss) from discontinued operations, net of tax							(1.3)	15.9
Income from discontinued operations, net of tax							143.7	$ 15.9
VENEZUELA
Cost of sales
Impairment of assets					$ 18.6
Write-off of uncollectible accounts receivable							$ 0.4