Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets
Allowances for doubtful accounts	$ 70.6	$ 50.4
Accumulated depreciation and amortization	$ 428.1	$ 477.0
Diebold Nixdorf, Incorporated shareholders' equity
Preferred shares, par value	$ 0	$ 0
Preferred shares, shares authorized	1,000,000	1,000,000
Preferred shares, shares issued	0	0
Common shares, par value	$ 1.25	$ 1.25
Common shares, shares authorized	125,000,000	125,000,000
Common shares, shares issued	90,481,613	89,924,378
Common shares, shares outstanding	75,527,998	75,144,784
Treasury shares, at cost, shares	14,953,615	14,779,597