Earnings per share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars, except share and per share data)	2014		2013		2014		2013
Numerator:
Net income	$	785	$	916	$	2,298	$	2,760
Denominator:
Denominator for basic earnings per share:
Weighted-average shares outstanding	334,472,324		340,888,648		337,083,498		340,905,322
Denominator for diluted earnings per share:
Share-based compensation plans	3,201,656		2,929,089		3,298,569		3,146,728
Weighted-average shares outstanding and assumed conversions	337,673,980		343,817,737		340,382,067		344,052,050
Basic earnings per share	$	2.35	$	2.68	$	6.82	$	8.09
Diluted earnings per share	$	2.32	$	2.66	$	6.75	$	8.02
Potential anti-dilutive share conversions	1,227,575		1,215,884		1,410,340		1,429,514