Name:	rig_IncreaseDecreaseInOtherCurrentAssets
Namespace Prefix:	rig_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase (decrease) during the reporting period in other noncurrent operating liabilities not separately disclosed in the statement of cash flows.

No definition available.

Name:	rig_IncreaseDecreaseInOtherNoncurrentLiabilities
Namespace Prefix:	rig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The number of midwater floaters sold or disposed of in the period.

No definition available.

Name:	rig_MidwaterFloatersSold
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The value of the consideration received for selling an asset or business through a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

No definition available.

Name:	rig_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1
Namespace Prefix:	rig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The total number of notes receivable provided to the company as non-cash proceeds from the sale of rigs.

No definition available.

Name:	rig_NumberOfNotesReceivedFromSaleOfTwoRigs
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Future cash outflow to pay for purchases of fixed assets that have occurred.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase during the period in capital lease obligations due to entering into new capital leases.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 32

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Data Type:	xbrli:monetaryItemType
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Data Type:	xbrli:stringItemType
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The fair value of assets acquired in noncash investing or financing activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 32

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 29

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 27

-Subparagraph f

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The net change during the reporting period in the aggregate amount of obligations and expenses incurred but not paid.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The net change during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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

The net change during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The net change during the reporting period of all current assets and liabilities used in operating activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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Data Type:	xbrli:stringItemType
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The net change during the reporting period in other operating assets not otherwise defined in the taxonomy.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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The amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalized

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 29

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 16

-Subparagraph c

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Current year acquisitions of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, and production equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	us-gaap_SignificantAcquisitionsAndDisposalsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration