Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Effect of dilutive securities on diluted earnings per share

	For the years ended
	December 31, 2017		December 31, 2016			December 31, 2015
	(In millions, except per share amounts)
Amounts attributable to Molson Coors Brewing Company:
Net income (loss) from continuing operations	$	1,412.7	$	1,995.8		$	391.3
Income (loss) from discontinued operations, net of tax	1.5		(2.8		)	3.9
Net income (loss) attributable to Molson Coors Brewing Company	$	1,414.2	$	1,993.0		$	395.2
Weighted-average shares for basic EPS	215.4		212.0			185.3
Effect of dilutive securities:
RSUs, DSUs, and PSUs	0.6		0.8			0.7
Stock options and SOSARs	0.5		0.6			0.4
Weighted-average shares for diluted EPS	216.5		213.4			186.4
Basic net income (loss) attributable to Molson Coors Brewing Company per share:
From continuing operations	$	6.56	$	9.41		$	2.11
From discontinued operations	0.01		(0.01		)	0.02
Basic net income (loss) attributable to Molson Coors Brewing Company per share	$	6.57	$	9.40		$	2.13
Diluted net income (loss) attributable to Molson Coors Brewing Company per share:
From continuing operations	$	6.52	$	9.35		$	2.10
From discontinued operations	0.01		(0.01		)	0.02
Diluted net income (loss) attributable to Molson Coors Brewing Company per share	$	6.53	$	9.34		$	2.12
Dividends declared and paid per share	$	1.64	$	1.64		$	1.64

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following anti-dilutive securities were excluded from the computation of the effect of dilutive securities on diluted EPS:

	For the years ended
	December 31, 2017	December 31, 2016	December 31, 2015
	(In millions)
RSUs, stock options and SOSARs	0.3	0.1	0.1