Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

v3.8.0.1
Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Sep. 30, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Common stock, par value (USD per share) $ 0.01 $ 0.01
Common stock, shares authorized 1,500,000,000 1,500,000,000
Common stock, shares issued 977,000,000 949,000,000
Common stock, shares outstanding 965,000,000 935,000,000
Treasury stock, shares 12,000,000 14,000,000