Consolidated Balance Sheet and Mini Balance Sheet (Paranthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,100,000,000	1,100,000,000	1,100,000,000.00
Common Stock, Shares, Issued	485,707,644	482,790,696	480,136,000	479,767,000
Common Stock, Shares, Outstanding	467,000,306	481,980,111	480,095,000
Treasury Stock, Shares	18,707,338	810,585	41,000	0