Earnings Per Share

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings Per Share

Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding plus the dilutive effect, if any, of market share units, or MSUs, performance shares, restricted stock units, or RSUs, stock options, deferred shares associated with our deferred compensation program for non-employee directors and the potential conversion of our $75 million of 10% convertible senior notes due 2018, which were subsequently converted in April 2014. See Note 17. The reconciliation of basic earnings per share to diluted earnings per share is shown in the following table.

	Three months ended March 31,
(millions, except per-share data)	2014		2013
Net income	$	45	$	2
Effect of dilutive securities - RSUs, MSUs, performance shares and stock options	—		—
Effect of dilutive securities - 10% convertible senior notes	2		—
Effect of dilutive securities - Deferred compensation program for non-employee directors	—		—
Income available to shareholders	47		2
Average common shares	137.8		108.4
Dilutive RSUs, MSUs, performance shares and stock options	2.5		2.7
Common shares issuable upon conversion of our 10% convertible senior notes	6.6		—
Deferred shares associated with a deferred compensation program for non-employee directors	—		0.2
Average diluted common shares	146.9		111.3
Earnings per average common share	$	0.33	$	0.02
Earnings per average diluted common share	$	0.32	$	0.02

In December 2013, we converted $325 million of our 10% convertible senior notes due 2018 into approximately 28.5 million common shares. In April 2014, we converted the remaining $75 million of these notes into approximately 6.6 million common shares. See further discussion in Note 17.

MSUs, performance shares, RSUs, stock options and common shares issuable upon conversion of our 10% convertible senior notes that were not included in the computation of diluted earnings per share for those periods because their inclusion would be anti-dilutive were as follows:

	Three months ended March 31,
(millions, common shares)	2014	2013
MSUs, performance shares, RSUs and stock options	2.1	2.2
10% convertible senior notes due 2018	—	35.1