Most recent ownership percentage of majority stockholder of the Company.

No definition available.

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Namespace Prefix:	do_
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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Balance Type:	debit
Period Type:	instant

- 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

- Details

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General Information - Additional Information (Detail) - USD ($) $ in Thousands	Jul. 26, 2019	Jun. 30, 2019	Jan. 01, 2019
Property Plant And Equipment [Line Items]
Operating lease assets		$ 171,000
Operating lease liabilities		$ 154,639
ASU 2016-02 [Member]
Property Plant And Equipment [Line Items]
Operating lease assets			$ 146,800
Operating lease liabilities			$ 146,800
Subsequent Event [Member]
Property Plant And Equipment [Line Items]
Outstanding common stock owned by loews corporation	53.00%