Earnings Per Share - Narrative (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, shares would have been included if no net loss (in shares)	2.5	0.6		0.9
Antidilutive securities excluded from computation of earnings per share, amount, treasury stock method	0.4	0.1		0.3
Employee stock option and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	4.6	4.0	2.2	4.0