Stockholder's Equity (Details)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Preferred Stock:
Authorized shares	50,000,000	50,000,000
Issued shares	25,875,000	26,108,236
Outstanding shares	25,875,000	26,108,236	26,224,854	26,224,854
Common Stock, $1.00 par value:
Authorized shares	400,000,000	400,000,000
Issued shares	291,638,492	290,024,789
Outstanding shares	291,084,415	289,563,651