Earnings per share (Tables)

6 Months Ended

Jun. 30, 2012

Schedule Of Earnings Per Share, Basic And Diluted

	Three Months Ended				Six Months Ended
	June 30				June 30
	2012		2011		2012		2011
	(in millions of U.S. dollars, except share and per share data)
Numerator:
Net income	$	328	$	594	$	1,301	$	844
Denominator for basic earnings per share:
Weighted-average shares outstanding		339,766,067		338,920,580		339,164,449		338,021,487
Denominator for diluted earnings per share:
Share-based compensation plans		2,907,971		2,768,388		3,006,950		2,596,909
Adjusted weighted-average shares outstanding and assumed conversions		342,674,038		341,688,968		342,171,399		340,618,396
Basic earnings per share	$	0.96	$	1.75	$	3.83	$	2.50
Diluted earnings per share	$	0.96	$	1.74	$	3.80	$	2.48