Comprehensive Income Net Of Tax Excluding Portion Attributable To Redeemable Noncontrolling Interest

Name:	ix_ComprehensiveIncomeNetOfTaxExcludingPortionAttributableToRedeemableNoncontrollingInterest
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contributions from and (distributions to) noncontrolling interests.

+ Details

Name:	ix_ContributionsFromAndDistributionsToNoncontrollingInterests
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Other Comprehensive Income, Available for sale Securities Adjustment, Net of Tax Period Increase Decrease Excluding Portion Attributable To Redeemable Noncontrolling Interest

+ Details

Name:	ix_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseExcludingPortionAttributableToRedeemableNoncontrollingInterest
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Excluding Portion Attributable To Redeemable Noncontrolling Interest

+ Details

Name:	ix_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecreaseExcludingPortionAttributableToRedeemableNoncontrollingInterest
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Net of Tax, Excluding Portion Attributable To Redeemable Noncontrolling Interest

+ Details

Name:	ix_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseExcludingPortionAttributableToRedeemableNoncontrollingInterest
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest and excluding Redeemable Noncontrolling Interests.

+ Details

Name:	ix_ProfitLossExcludingRedeemableNoncontrollingInterests
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total of Stockholders' Equity (deficit) items, as restated, net of receivables from officers, directors owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity.

+ Details

Name:	ix_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestRestated
Namespace Prefix:	ix
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of recognized share-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 39

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64
-Subparagraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A91

+ Details

Name:	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_ComprehensiveIncomeNetOfTaxAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Cumulative effect of initial adoption of new accounting principle on beginning retained earnings, net of tax. This element can be used, generally, for the adjustment to retained earnings of a new accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 154
-Paragraph 17, 18

+ Details

Name:	us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash dividends declared by an entity during the period for all classes of stock (common, preferred). This element includes paid and unpaid dividends declared during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 14
-Subparagraph l

+ Details

Name:	us-gaap_DividendsCash
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Net increase (decrease) in balance of noncontrolling interest in the subsidiary during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38

+ Details

Name:	us-gaap_MinorityInterestPeriodIncreaseDecrease
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Net changes to accumulated comprehensive income during the period related to benefit plans, after tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7
-Subparagraph c

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14, 17, 22, 26

+ Details

Name:	us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Net of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14, 17, 20, 26

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 31, 46

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 46

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14, 17, 20, 24, 26

+ Details

Name:	us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 25

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 26

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A3
-Appendix A

+ Details

Name:	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.

+ Details

Name:	us-gaap_StockholdersEquityOther
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Value of stock issued during the period upon the conversion of convertible securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 4, 5

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Value of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Value stock issued during the period as a result of the exercise of stock options.

+ References

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 7
-Subparagraph b

+ Details

Name:	us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Value of common and preferred stock retired from treasury during the period. This element is used only when Treasury Stock is accounted for at total cost versus par.

+ References

+ Details

Name:	us-gaap_TreasuryStockValueRetiredCostMethod
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY In Millions	Total USD ($)	Total JPY (¥)	Common Stock USD ($)	Common Stock JPY (¥)	Additional Paid-in Capital USD ($)	Additional Paid-in Capital JPY (¥)	Retained Earnings USD ($)	Retained Earnings JPY (¥)	Accumulated Other Comprehensive Income (Loss) USD ($)	Accumulated Other Comprehensive Income (Loss) JPY (¥)	Treasury Stock USD ($)	Treasury Stock JPY (¥)	Total ORIX Corporation Shareholders' Equity USD ($)	Total ORIX Corporation Shareholders' Equity JPY (¥)	Noncontrolling Interests USD ($)	Noncontrolling Interests JPY (¥)
Beginning Balance at Mar. 31, 2008		¥ 1,285,146		¥ 102,107		¥ 135,159		¥ 1,083,439		¥ (19,295)		¥ (33,493)		¥ 1,267,917		¥ 17,229
Contribution to subsidiaries		2,162												0		2,162
Transaction with noncontrolling interests		(1,426)												0		(1,426)
Comprehensive income (loss), net of tax:
Net income		23,099						21,924						21,924		1,175
Other comprehensive income (loss)
Net change of unrealized gains (losses) on investment in securities		(41,906)								(41,901)				(41,901)		(5)
Net change of defined benefit pension plans		(12,098)								(12,098)				(12,098)		0
Net change of foreign currency translation adjustments		(18,000)								(17,989)				(17,989)		(11)
Net change of unrealized gains (losses) on derivative instruments		(1,101)								(1,101)				(1,101)		0
Total other comprehensive income (loss)		(73,105)												(73,089)		(16)
Total comprehensive income (loss)		(50,006)												(51,165)		1,159
Cash dividends		(24,586)						(23,529)						(23,529)		(1,057)
Exercise of stock options		217		109		108								217		0
Compensation cost of stock options		1,370				1,370								1,370		0
Acquisition of treasury stock		(29,294)										(29,294)		(29,294)		0
Disposal of treasury stock		1,595				(533)		(9,915)				12,043		1,595		0
Other, net		419				209						210		419		0
Ending Balance at Mar. 31, 2009		1,185,597		102,216		136,313		1,071,919		(92,384)		(50,534)		1,167,530		18,067
Cumulative effect of applying new accounting standards		1,758						1,758						1,758		0
Beginning Balance Restated		1,187,355		102,216		136,313		1,073,677		(92,384)		(50,534)		1,169,288		18,067
Issuance of common stock		83,024		41,677		41,347								83,024		0
Contribution to subsidiaries		2,473												0		2,473
Transaction with noncontrolling interests		(359)				(32)				(387)				(419)		60
Comprehensive income (loss), net of tax:
Net income		38,461						37,757						37,757		704
Other comprehensive income (loss)
Net change of unrealized gains (losses) on investment in securities		13,499								13,497				13,497		2
Net change of defined benefit pension plans		7,125								7,129				7,129		(4)
Net change of foreign currency translation adjustments		(6,862)								(5,860)				(5,860)		(1,002)
Net change of unrealized gains (losses) on derivative instruments		(1,460)								(1,454)				(1,454)		(6)
Total other comprehensive income (loss)		12,302												13,312		(1,010)
Total comprehensive income (loss)		50,763												51,069		(306)
Cash dividends		(8,778)						(6,261)						(6,261)		(2,517)
Conversion of convertible bond		14		7		7								14		0
Exercise of stock options		77		39		38								77		0
Compensation cost of stock options		611				611								611		0
Acquisition of treasury stock		(3)										(3)		(3)		0
Disposal of treasury stock		291						(531)				822		291		0
Other, net		993				377		137				479		993		0
Ending Balance at Mar. 31, 2010	15,833	1,316,461	1,731	143,939	2,149	178,661	13,287	1,104,779	(956)	(79,459)	(592)	(49,236)	15,619	1,298,684	214	17,777
Cumulative effect of applying new accounting standards	(261)	(21,668)					(271)	(22,495)	(41)	(3,406)			(312)	(25,901)	51	4,233
Beginning Balance Restated	15,572	1,294,793	1,731	143,939	2,149	178,661	13,016	1,082,284	(997)	(82,865)	(592)	(49,236)	15,307	1,272,783	265	22,010
Contribution to subsidiaries	46	3,864											0	0	46	3,864
Transaction with noncontrolling interests	(27)	(2,246)			2	200			0	4			2	204	(29)	(2,450)
Comprehensive income (loss), net of tax:
Net income	838	69,648					809	67,275					809	67,275	29	2,373
Other comprehensive income (loss)
Net change of unrealized gains (losses) on investment in securities	92	7,663							91	7,605			91	7,605	1	58
Net change of defined benefit pension plans	(24)	(2,006)							(24)	(2,006)			(24)	(2,006)	0	0
Net change of foreign currency translation adjustments	(226)	(18,833)							(217)	(18,118)			(217)	(18,118)	(9)	(715)
Net change of unrealized gains (losses) on derivative instruments	(10)	(782)							(10)	(800)			(10)	(800)	0	18
Total other comprehensive income (loss)	(168)	(13,958)											(160)	(13,319)	(8)	(639)
Total comprehensive income (loss)	670	55,690											649	53,956	21	1,734
Cash dividends	(139)	(11,532)					(97)	(8,061)					(97)	(8,061)	(42)	(3,471)
Conversion of convertible bond	0	14	0	7	0	7							0	14	0	0
Exercise of stock options	2	98	1	49	1	49							2	98	0	0
Compensation cost of stock options	2	142			2	142							2	142	0	0
Acquisition of treasury stock	(1)	(70)									(1)	(70)	(1)	(70)	0	0
Other, net	3	275			0	78	1	61			2	136	3	275	0	0
Ending Balance at Mar. 31, 2011	$ 16,128	¥ 1,341,028	$ 1,732	¥ 143,995	$ 2,154	¥ 179,137	$ 13,729	¥ 1,141,559	$ (1,157)	¥ (96,180)	$ (591)	¥ (49,170)	$ 15,867	¥ 1,319,341	$ 261	¥ 21,687