Stock Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Fair Value Assumptions [Table Text Block]

The per share fair value of performance-based awards granted during the years ended December 31, 2018, 2017 and 2016 was $54.10, $53.43, and $48.48, respectively, which the Company determined using a Monte Carlo simulation and the following assumptions:

	2018		2017		2016
Average risk-free interest rate	2.01	%	1.50	%	1.31	%
Expected volatility (Bemis Company, Inc.)	20.0	%	17.7	%	16.3	%

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

The following table summarizes stock awards unit activity for the year ended December 31, 2018:

	Time-Based				Performance-Based
	Weighted-average grant date share value		Stock Awards (in thousands)		Weighted-average grant date share value		Stock Awards (in thousands)
Outstanding units granted at the beginning of the year	$	45.84	566		$	51.35	525
Units granted	46.30		208		54.10		269
Units paid (in shares)	44.92		(271	)	53.14		(57	)
Units forfeited / canceled	46.80		(21	)	52.77		(53	)
Outstanding units granted at the end of the year	46.51		482		52.17		684