Deferred Compensation Arrangement With Individual Cash Distribution Per Unit

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- Definition

Defined Benefit Plan Contribution Of Pension Fund In Excess Of Total Contribution

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No definition available.

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- Definition

Defined Benefit Plan, Employee Contribution, Percentage

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No definition available.

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- Definition

Defined Benefit Plan, Expected Future Benefit Payments in Years One Through Five

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No definition available.

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- Definition

Defined Benefit Plan Individual Minimum Age

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No definition available.

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- Definition

Defined Benefit Plan Number Of Plans

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No definition available.

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- Definition

Defined Benefit Plan Requisite Service Period

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No definition available.

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- Definition

Discount Rate To Determine Periodic Pension Expense

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No definition available.

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- Definition

Employee Benefit Payments Period

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No definition available.

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- Definition

Gains Interest Cash Proceeds Percentage From Sale Of General Partner Units

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No definition available.

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- Definition

Green Zone Multiemployer Plans Funded Percentage

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No definition available.

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- Definition

Incentive Distribution Percentage Of Available Cash In Excess Of Minimum Quarterly Distribution

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No definition available.

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- Definition

Net Actuarial Loss Balance In Accumulated Other Comprehensive Income To Be Amortized

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No definition available.

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- Definition

Number of Defined Benefit Pension Plans

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No definition available.

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- Definition

Rate Pension Plan Assets Expect To Earn

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No definition available.

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- Definition

Red Zone Multiemployer Plans Funded Percentage

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No definition available.

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- Definition

Yellow Zone Multiemployer Plans Funded Percentage

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No definition available.

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- Definition

The amount of distributions made to the individual during the period.

+ References

No definition available.

+ Details

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- Definition

This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.24)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2410-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

+ Details

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- Definition

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

+ References

No definition available.

+ Details

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- Definition

Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

+ Details

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

+ Details

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- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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- Details

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Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 30, 2013 Program	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum participant contribution	60.00%
Minimum age for defined benefit plan	55 years
Defined contribution, matching percentage of participant's compensation	0.667%
Partnership aggregate contributions to defined contribution plans	$ 4,900,000	$ 4,500,000	$ 4,700,000
Number of 401 (k) plans	2
Maximum funded for red zone	65.00%
Maximum funded for yellow zone	80.00%
Minimum funded for green zone	80.00%
Partnership contributions in excess of 5% of the plan's total contributions in percentage	5.00%	5.00%	5.00%
Defined benefit plan funded status included in other long-term liabilities	4,300,000	12,700,000
Net actuarial loss balance in accumulated other comprehensive income to be amortized	25,500,000
Amount to be amortized from accumulated other comprehensive income	2,100,000
Rate pension plan assets expect to earn	5.75%
Discount rate to determine periodic pension expense	3.50%	4.35%	4.70%
Expected Pension Contribution Next Year	2,700,000
Expected benefit payments in years	5 years
Expected benefit payments over the next 5 years	4,400,000
Aggregate expected benefit payment for five years thereafter	21,200,000
Domestic Fixed Income
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pension asset allocation	80.00%
International Equities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pension asset allocation	5.00%
Domestic Equities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pension asset allocation	15.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participant Contribution	0.00%
Minimum Service Period for Defined Benefit Plans	10 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined contribution, matching percentage of participant's compensation	2.00%
Frozen Defined Benefit Pension Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of frozen defined benefit pension plans	2
Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive distribution percentage of available cash in excess of minimum quarterly distribution	50.00%
Minimum quarterly distribution	0.0675
Gains interest cash proceeds percentage from the sale of general partner units	50.00%
Management And General Partner
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Partnership incentive distribution	330,000	277,000	261,000
Management Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Partnership incentive distribution	165,000	138,000	130,000
Management Incentive Compensation Plan Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Partnership incentive distribution	$ 119,000	$ 99,000	$ 92,000
Core Contribution
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum participant contribution	5.50%
Core Contribution \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participant Contribution	4.00%