Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Additional Information (Details)

v3.8.0.1
Earnings Per Share - Additional Information (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Employees And Non Employees Stock Option        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Stock options excluded from computation of earnings per share 4.9 5.2 8.6 5.3
Performance-Based Restricted Stock Units        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Stock options excluded from computation of earnings per share 1.1 1.0 1.1 1.0