Basis of Presentation and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Reconciliation from Basic to Diluted Shares

The table below presents a reconciliation of weighted average shares used in the calculation of basic and diluted EPS.

	Three Months Ended
	March 31,
(in millions)	2017	2016
Weighted average shares for basic EPS	410	459
Dilutive effect of shares issuable under stock-based compensation plans	6	5
Weighted average shares for diluted EPS	416	464