Earnings (Loss) Per Share And Shareholder's Equity (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of earnings per share

A reconciliation of the numerators and denominators used in our basic and diluted EPS calculation is as follows (in millions):

	Year Ended					Six Months Ended		Year Ended
	December 31, 2017		December 31, 2016			December 31, 2015		June 27, 2015
Numerator:
Net income (loss)	$	119.6	$	(4,012.8	)	$	42.5	$	136.1
Denominator:
Weighted average shares outstanding for basic EPS	142.3		143.3			145.6		139.3
Dilutive effect of share-based awards*	0.3		—			0.5		0.5
Weighted average shares outstanding for diluted EPS	142.6		143.3			146.1		139.8
Anti-dilutive share-based awards excluded from computation of diluted EPS*	0.8		—			0.1		0.1

* In the period of a net loss, diluted shares equal basic shares.

Schedule of dividends payable

In January 2003, the Board of Directors adopted a policy of paying quarterly dividends. We paid dividends as follows:

	Year Ended				Six Months Ended		Year Ended
	December 31, 2017		December 31, 2016		December 31, 2015		June 27, 2015
Dividends paid (in millions)	$	91.1	$	83.2	$	36.3	$	64.8
Dividends paid (per share)	$	0.64	$	0.58	$	0.25	$	0.46