2.0.0.10 false Cash and Cash Equivalents 006050 - Disclosure - Cash and Cash Equivalents true false false false 1 usd $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 2 Notes to Financial Statements [Abstract] 0 rdc_NotesToFinancialStatementsAbstract rdc false na duration string No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false No definition available. false 3 Note 5 - Cash and Cash Equivalents 1 us-gaap_CashAndCashEquivalentsDisclosureTextBlock us-gaap true na duration string No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Note 5 - Cash and Cash Equivalents</font></div> <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /> </div> <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Certain of Rowan's debt securities are government-guaranteed through the Title XI program of the U.S. Department of Transportation's Maritime Administration ("MARAD").  At the Company's request, MARAD waived certain windstorm insurance coverage requirements under the loan agreements, for which the Company agreed to maintain a minimum cash balance, which is currently $25 million.  Rowan remains subject to restrictions on the use of certain insurance proceeds should the Company experience future windstorm losses.  Each of these security provisions will be released by MARAD should Rowan be able to obtain windstorm coverage that satisfies the original terms of its debt agreements.</font></div> <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /> </div> </div> Note 5 - Cash and Cash Equivalents Certain of Rowan's debt securities are government-guaranteed through the Title XI program of the U.S. Department of false false false The entire cash and cash equivalents footnote disclosure, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section H -Subsection 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9, 10 false false 1 2 false UnKnown UnKnown UnKnown false true