Computation of Earnings Per Common Share and Common Share Equivalents

The following table sets forth the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2018 and 2017:



	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands, except per share amounts)	2018		2017		2018		2017

Basic earnings per common share & common share equivalents outstanding:
Net income (loss) attributable to common shareholders	$	318,996	$	301,620	$	471,644	$	454,463
Weighted average common shares outstanding - basic	258,375		260,990		257,653		263,327
Basic earnings per common share & common share equivalents outstanding	$	1.23	$	1.16	$	1.83	$	1.73

Diluted earnings per common share & common share equivalents outstanding:
Weighted average common shares outstanding - basic	258,375		260,990		257,653		263,327
Impact of share-based compensation	5,447		3,953		4,957		3,952
Weighted average common shares outstanding - diluted	263,822		264,943		262,610		267,279
Diluted earnings per common share & common share equivalents outstanding	$	1.21	$	1.14	$	1.80	$	1.70
Dividends per common share	$	0.22	$	0.22	$	0.44	$	0.44

For the three and six months ended June 30, 2018 and 2017, common shares available for issuance under share-based compensation plans noted in the table below were not included in the calculation of diluted earnings per common share because the assumed exercise or issuance of such shares would be anti-dilutive.



	Three Months Ended June 30,		Six Months Ended June 30,
(In millions)	2018	2017	2018	2017
Common shares available for issuance under share-based compensation plans	—	1.2	0.2	1.3