XML 40 R30.htm IDEA: XBRL DOCUMENT v3.8.0.1

Financial Instruments and Fair Value Measurement (Tables)

6 Months Ended

Mar. 31, 2018

Financial Instruments and Fair Value Measurement

Summary of available-for-sale securities

					Gross			Gross			Estimated
					Unrealized			Unrealized			Fair
		Cost			Gains			Losses			Value
		(in thousands)
Equity Securities:
March 31, 2018		$	38,473		$	26,572		$	(6,664)		$	58,381
September 30, 2017		$	38,473		$	31,700		$	—		$	70,173

Summary of assets and liabilities measured at fair value

The following table summarizes our assets and liabilities measured at fair value presented in our Consolidated Condensed Balance Sheet as of March 31, 2018:

		Fair Value			(Level 1)			(Level 2)			(Level 3)
		(in thousands)
Recurring fair value measurements:
Short-term investments:
Certificates of deposit		$	3,498		$	—		$	3,498		$	—
Corporate and municipal debt securities			15,858			—			15,858			—
U.S. government and federal agency securities			25,914			25,914			—			—
Total short-term investments			45,270			25,914			19,356			—
Cash and cash equivalents			334,764			334,764			—			—
Investments			58,381			58,381			—			—
Other current assets			38,385			38,385			—			—
Other assets			6,905			6,905			—			—
Total assets measured at fair value		$	483,705		$	464,349		$	19,356		$	—
Liabilities:
Contingent earnout liability		$	15,702		$	—		$	—		$	15,702

Summary of supplemental fair value information about long-term fixed-rate debt

		March 31,			September 30,
		2018			2017
		(in millions)
Carrying value of long-term fixed-rate debt		$	493.4		$	492.9
Fair value of long-term fixed-rate debt		$	521.8		$	529.0

X

- Definition

Tabular disclosure of the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs).

+ References

No definition available.

+ Details

Name:	hp_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock
Namespace Prefix:	hp_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

+ Details

Name:	us-gaap_FairValueByBalanceSheetGroupingTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration