Supplementary Information - Condensed Consolidating Financial Information (Tables)	3 Months Ended
Mar. 31, 2020
Supplementary Information - Condensed Consolidating Financial Information [Abstract]
Condensed Consolidated Income Statement	Millions of Dollars
Schedule of Condensed Balance Sheet	Millions of Dollars
Condensed Consolidated Statement of Cash Flows	Millions of Dollars

No definition available.

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- Definition

Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 3
-Paragraph i
-Subsection 10

+ Details

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- Definition

Tabular disclosure of condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 3
-Paragraph i
-Subsection 10

+ Details

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- Definition

Tabular disclosure of condensed income statement, including, but not limited to, income statements of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 3
-Paragraph i
-Subsection 10

+ Details

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