Earnings per share

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Earnings per share

Earnings per share

	Three Months Ended
	March 31
(in millions of U.S. dollars, except share and per share data)	2016		2015
Numerator:
Net income	$	439	$	681
Denominator:
Denominator for basic earnings per share:
Weighted-average shares outstanding	446,739,586		328,212,376
Denominator for diluted earnings per share:
Share-based compensation plans	3,270,156		3,480,344
Weighted-average shares outstanding and assumed conversions	450,009,742		331,692,720
Basic earnings per share	$	0.98	$	2.08
Diluted earnings per share	$	0.97	$	2.05
Potential anti-dilutive share conversions	2,074,308		715,148

Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods.