Drilling Fleet (Impairment held for sale) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2020
Drilling Fleet
Aggregate loss on impairment of assets held for sale	$ 419	$ 556
Aggregate loss on impairment of assets held for sale, net of tax	$ 420
Loss associated with impairment, net of tax (per share)	$ 0.68	$ 0.90
Aggregate loss on impairment of assets held for sale, tax effect		$ 0

Represents the tax effect of impairments recognized during the period for long-lived assets held in continuing operations for abandonment, exchange or sale.

No definition available.

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- Definition

Represents the loss recognized for an asset classified as held for sale in continuing operations, net of tax.

+ References

No definition available.

+ Details

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- Definition

After tax earnings per share or per unit impact arising from asset impairment.

+ References

No definition available.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2611-110228

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- References

No definition available.

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