Line of Credit Facility, Available Additional Borrowing Capacity

No definition available.

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Namespace Prefix:	oii_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Basis Spread on Variable Rate

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for loan and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

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- Details

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Balance Type:
Period Type:

- Details

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- Details

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- Details

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- Details

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- Details

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Debt - Line of Credit (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Debt - Line of Credit (Details) - USD ($) $ in Millions	Dec. 31, 2014	Jun. 30, 2018
Line of Credit Facility [Line Items]
Line of Credit Facility, Available Additional Borrowing Capacity		$ 300.0
Payments of Financing Costs	$ 2.6
Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.125%
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.30%
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 500.0
Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 300.0
Credit Agreement [Member] \| Adjusted Base Rate Advances [Member] \| Adjusted Base Rate [Member] \| Federal Funds Rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		0.50%
Credit Agreement [Member] \| Adjusted Base Rate Advances [Member] \| Adjusted Base Rate [Member] \| Eurodollar Rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		1.00%
Credit Agreement [Member] \| Adjusted Base Rate Advances [Member] \| Applicable Margin [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		0.125%
Credit Agreement [Member] \| Adjusted Base Rate Advances [Member] \| Applicable Margin [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		0.75%
Credit Agreement [Member] \| Eurodollar Advances [Member] \| Applicable Margin [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		1.125%
Credit Agreement [Member] \| Eurodollar Advances [Member] \| Applicable Margin [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate		1.75%