Company match employee contributions.

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Concentration of investment funds

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Defined benefit plan assumptions used calculating net periodic benefit cost rate of compensation change in rate.

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Defined benefit plan contributions to profit sharing investment plan

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Defined benefit plan projected benefit obligation unfunded pension plan

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Employee contributions

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Loan period for loans to finance purchases.

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- Definition

Psip Catch Up Contribution Limit

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Unit value of cash and cash equivalents

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Unrecognized actuarial losses

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For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph e

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-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

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-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

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- Definition

The amount of gains or losses recognized in net periodic benefit cost.

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The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph s

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 158

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- Definition

The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph s

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (s)

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- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

+ References

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- Definition

The interest rate used to adjust for the time value of money for the plan.

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

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The employer's best estimate, as soon as it can be reasonably determined, 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. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).

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- Definition

The amount of the benefits expected to be paid in Year 5.

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The amount of the benefits expected to be paid in Year 4.

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The amount of the benefits expected to be paid in Year 1.

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The amount of the benefits expected to be paid in Year 3.

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The amount of the benefits expected to be paid in Year 2.

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- Definition

Target allocation percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(2)

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-Name Accounting Standards Codification

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- Definition

Target allocation percentage of investments in equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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No definition available.

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Target allocation percentage in other than debt securities, equity securities, and real estate to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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- Definition

The amount reported as a liability as of the balance sheet date by the entity (the employer) of the loan made by a third-party lender directly to the ESOP.

+ References

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 93-6

-Paragraph 24, 25

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Direct Loan

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 40

-Section 25

-Paragraph 9

-Subparagraph (a)

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Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 93-6

-Paragraph 53

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 40

-Section 50

-Paragraph 1

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- Definition

This element represents the gross amount awarded, to be received by, or to be remitted to the entity in settlement of litigation occurring during the period.

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Pension Benefits (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified		12 Months Ended					12 Months Ended				1 Months Ended			12 Months Ended
	Mar. 31, 2010	Mar. 31, 2012 Defined Pension Benefit Plans [Member]	Mar. 31, 2011 Defined Pension Benefit Plans [Member]	Mar. 31, 2010 Defined Pension Benefit Plans [Member]	Mar. 31, 2012 U.S. Defined Benefit Pension Plan [Member]	Mar. 31, 2011 U.S. Defined Benefit Pension Plan [Member]	Mar. 31, 2012 Bartram International Fund [Member]	Mar. 31, 2011 Bartram International Fund [Member]	Mar. 31, 2012 Defined Contribution Plans [Member]	Mar. 31, 2010 Defined Contribution Plans [Member]	Oct. 31, 2009 Defined Contribution Plans [Member] PSIP Proceeds From Allocated Shares - Consolidated Securities Litigation Action [Member]	Oct. 31, 2009 Defined Contribution Plans [Member] PSIP Proceeds From Unallocated Shares - Consolidated Securities Litigation Action [Member]	Oct. 31, 2009 Defined Contribution Plans [Member] PSIP Total Proceeds - Consolidated Securities Litigation Action [Member]	Mar. 31, 2012 First Part Of Pay Contribution [Member] Defined Contribution Plans [Member]	Mar. 31, 2012 Second Part Of Pay Contribution [Member] Defined Contribution Plans [Member]	Mar. 31, 2012 Minimum [Member] Defined Contribution Plans [Member]	Mar. 31, 2012 Maximum [Member] Defined Contribution Plans [Member]
Defined Benefit Plans Contribution Plan [Line Items]
Unrecognized actuarial losses		exceeding 10% of the greater of the projected benefit
Accumulated benefit obligations		$ 667,000,000	$ 622,000,000
Expected amortization of prior service cost in 2013		2,000,000
Expected amortization of actuarial loss in 2013		30,000,000
Amortization of prior service cost		2,000,000
Amortization of actuarial loss		25,000,000
Projected benefit obligations		167,000,000	154,000,000
Expected benefit payments in 2013		43,000,000
Expected benefit payments in 2014		33,000,000
Expected benefit payments in 2015		144,000,000
Expected benefit payments in 2016		36,000,000
Expected benefit payments in 2017		33,000,000
Expected benefit payments, 2018 through 2022		190,000,000
Expected contributions in 2013		38,000,000
Discount rates		4.23%	4.99%	5.33%	4.15%	4.88%
Rate of decrease in weighted average discount rate		0.73%
Target allocations of equity investments		53.00%	61.00%
Target allocations of fixed income investments		35.00%	32.00%
Target allocations of all other types of investments including cash and cash equivalents		12.00%	7.00%
Unit value of cash and cash equivalents		1.00
Concentration of investment funds		10.00%					10.00%	11.00%
Contribution to PSIP									75.00%
PSIP catch-up contribution limit									75.00%
Company match employee contributions														100.00%	50.00%
Employee contributions														3.00%	2.00%
Aggregate purchase of common stock by ESOP									24
ESOP loan																P10Y	P20Y
Proceeds received PSIP - Consolidated Securities Litigation Action											42,000,000	77,000,000	119,000,000
Company's contribution to PSIP										1,000,000
Outstanding ESOP loans	$ 0