Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies [Abstract]

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

	Year ended
	December 31, 2018
Results of operations
Impairment of assets	$	(37.3	)
Net loss attributable to Diebold Nixdorf, Inc.	$	(37.3	)
Basic and diluted loss per common share	$	(0.49	)
Consolidated balance sheet data
Other current assets	$	(2.5	)
Goodwill	$	(28.9	)
Deferred income taxes (liabilities)	$	(68.1	)
Total equity	$	36.7

Contract with Customer, Asset and Liability [Table Text Block]

The following table provides 2019 and 2018 information about receivables and deferred revenue, which represent contract liabilities from contracts with customers:

	2019				2018
Contract balance information	Trade Receivables		Contract liabilities		Trade Receivables		Contract liabilities
Balance at January 1	$	737.2	$	378.2	$	827.9	$	436.5
Balance at December 31	$	619.3	$	320.5	$	737.2	$	378.2