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

6 Months Ended

Jun. 30, 2015

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		Six Months Ended
	June 30,		June 30,
(in millions)	2015	2014	2015	2014
Weighted average shares for basic EPS	490	570	494	578
Dilutive effect of shares issuable under stock-based compensation plans	5	11	6	12
Weighted average shares for diluted EPS	495	581	500	590