Redeemable Noncontrolling Interests (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 € / shares shares	Dec. 31, 2017 € / shares
Redeemable Noncontrolling Interest [Line Items]
Balance at January 1	$ 130.4	$ 492.1	$ 44.1
Other comprehensive income	(1.7)	(19.3)	32.8
Redemption value adjustment	(18.6)	2.8	32.0
Redemption of shares	(89.2)	(345.2)	(3.5)
Reclassification of noncontrolling interest	0.0	0.0	386.7
Balance at December 31	20.9	130.4	$ 492.1
Diebold Nixdorf AG | Domination and Profit and Loss Transfer Agreement [Member]
Redeemable Noncontrolling Interest [Line Items]
Balance at January 1	$ 99.1
Balance at December 31		$ 99.1
Business Acquisition, Number Of Ordinary Shares Tendered | shares				29.8
Business Acquisition, Percentage Tendered Of Ordinary Shares Issued				100.00%
Business Acquisition, Share Price | € / shares				€ 54.80	€ 55.02
Recurring Cash Compensation Per Share Net Of Tax | € / shares					€ 2.82