Earnings per share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted

	Three Months Ended				Six Months Ended
	June 30				June 30
(in millions of U.S. dollars, except share and per share data)	2016		2015		2016		2015
Numerator:
Net income	$	726	$	942	$	1,165	$	1,623
Denominator:
Denominator for basic earnings per share:
Weighted-average shares outstanding	467,701,328		325,463,196		457,102,802		326,795,838
Denominator for diluted earnings per share:
Share-based compensation plans	3,455,969		3,222,562		3,379,559		3,373,809
Weighted-average shares outstanding and assumed conversions	471,157,297		328,685,758		460,482,361		330,169,647
Basic earnings per share	$	1.55	$	2.89	$	2.55	$	4.97
Diluted earnings per share	$	1.54	$	2.86	$	2.53	$	4.91
Potential anti-dilutive share conversions	2,103,281		1,934,454		2,056,018		1,306,817