(Loss) earnings per share (Tables)

6 Months Ended

Jun. 27, 2020

Earnings Per Share [Abstract]

Schedule of computation of net income per share

The computation of (loss) earnings per share is presented below:

	Three months ended				Six months ended
(dollars in millions, except share numbers and per share amounts)	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
Net (loss) income attributable to shareholders	$	(22.4)	$	21.5	$	13.2	$	635.2
Weighted average number of shares outstanding	290,732,375		290,059,492		290,566,743		289,993,208
Dilutive effect of share-based awards	—		1,743,262		1,149,764		1,870,765
Diluted weighted average number of shares outstanding	290,732,375		291,802,754		291,716,507		291,863,973
Number of anti-dilutive shares excluded from the diluted (loss) earnings per share calculation	6,317,804		3,538,711		5,597,575		3,674,486
Basic (loss) earnings per share	$	(0.08)	$	0.07	$	0.05	$	2.19
Diluted (loss) earnings per share	$	(0.08)	$	0.07	$	0.05	$	2.18