XML 55 R45.htm IDEA: XBRL DOCUMENT v3.22.2
Shareholders' equity - Additional information (Details) - shares
shares in Millions
3 Months Ended 6 Months Ended
Jun. 26, 2022
Jun. 27, 2021
Jun. 26, 2022
Jun. 27, 2021
Equity [Abstract]        
Weighted average antidilutive shares which were not included in the calculation of earnings per share 0.4 0.1 0.3 0.1