CONDENSED CONSOLIDATED BALANCE SHEETS PARENTHETICAL (USD $)	Jun. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets Parenthetical
Common Stock Par Value	$ 1	$ 1

Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap
Data Type:	us-types:perShareItemType
Balance Type:	na
Period Type:	instant