Earnings per share (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Earnings Per Share, Basic And Diluted

	Three Months Ended					Nine Months Ended
	September 30					September 30
	2012		2011			2012		2011
	(in millions of U.S. dollars, except share and per share data)
Numerator:
Net income (loss)	$	640	$	(39	)	$	1,941	$	805
Denominator:
Denominator for basic earnings per share:
Weighted-average shares outstanding	340,207,037		338,385,734			339,523,388		338,139,477
Denominator for diluted earnings per share:
Share-based compensation plans	2,665,676		—			2,831,798		2,733,434
Adjusted weighted-average shares outstanding and assumed conversions	342,872,713		338,385,734			342,355,186		340,872,911
Basic earnings per share	$	1.88	$	(0.11	)	$	5.71	$	2.38
Diluted earnings per share	$	1.86	$	(0.11	)	$	5.67	$	2.36