Net Loss Per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following shares were excluded from the calculation of diluted loss per share because their inclusion would have been anti-dilutive (in millions):

	December 31, 2017	December 25, 2016	December 27, 2015
Shares from stock options and awards	0.1	1.4	1.9