Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Reconciliation of the Earnings (Losses) and Number of Shares Used in Calculations of Basic and Diluted Earnings Per Share

The table below presents the reconciliation of the earnings and number of shares used in our calculations of basic and diluted earnings per share:

	Three Months Ended				Six Months Ended
(in millions, except per share amounts)	June 30, 2017		June 30, 2016		June 30, 2017		June 30, 2016
Computation of Basic Earnings Per Share
Net income	$	414	$	247	$	779	$	466
Shares for basic earnings per share	378.5		254.3		381.7		254.3
Basic earnings per share	$	1.09	$	0.97	$	2.04	$	1.83
Computation of Diluted Earnings Per Share
Net income	$	414	$	247	$	779	$	466
Shares for basic earnings per share	378.5		254.3		381.7		254.3
Effect of dilutive securities
Share-based compensation	4.5		3.7		4.8		4.4
Shares for diluted earnings per share	383.0		258.0		386.5		258.7
Diluted earnings per share	$	1.08	$	0.96	$	2.02	$	1.80