Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets
Allowances for doubtful accounts	$ 54.4	$ 58.2
Accumulated depreciation and amortization	$ 517.8	$ 494.1
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	92,132,662	91,345,451
Common shares, shares outstanding	76,745,677	76,174,025
Treasury shares, at cost, shares	15,386,985	15,171,426