Earnings per share (Tables)

9 Months Ended

Sep. 30, 2016

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)	2016		2015		2016		2015
Numerator:
Net income	$	1,360	$	528	$	2,525	$	2,151
Denominator:
Denominator for basic earnings per share:
Weighted-average shares outstanding	468,021,093		324,210,936		460,631,794		325,904,502
Denominator for diluted earnings per share:
Share-based compensation plans	3,375,269		2,962,484		3,439,017		3,269,724
Weighted-average shares outstanding and assumed conversions	471,396,362		327,173,420		464,070,811		329,174,226
Basic earnings per share	$	2.90	$	1.63	$	5.48	$	6.60
Diluted earnings per share	$	2.88	$	1.62	$	5.44	$	6.53
Potential anti-dilutive share conversions	1,306,710		1,907,815		1,635,337		1,503,830