Stockholders' Equity (Reconciliation of Common Stock Share Activity) (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders' Equity Note [Abstract]
Common stock, beginning balance	1,020,057	1,013,164	1,004,351
Common stock, issued	14,370	14,671	22,650
Common stock, retired	(20,400)	(7,778)	(13,837)
Common stock, ending balance	1,014,027	1,020,057	1,013,164
Held in treasury, beginning balance	(87,041)	(87,041)	(87,041)
Held in treasury, repurchased	(20,400)	(7,778)	(13,837)
Held in treasury, retired	20,400	7,778	13,837
Held in treasury, ending balance	(87,041)	(87,041)	(87,041)