Amount of short-term and long-term debt and lease obligation.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Fair value of the amount outstanding under the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

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The value of notes retired (or transferred to another entity) in noncash investing or financing transactions.

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Indebtedness divided by net capital.

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DEBT Narrative (Details) - USD ($) $ in Millions	3 Months Ended
DEBT Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2021	Mar. 31, 2021
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 2,100
Minimum Net Worth Required for Compliance	9,000
Debt and capital lease obligations	7,200
Debt fair value	$ 9,100
Minimum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital	0.60
Commercial Paper
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,000
Line of Credit Facility, Fair Value of Amount Outstanding	0
Revolving Credit Facility [Member] \| Committed Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	1,500
Line of Credit Facility, Fair Value of Amount Outstanding	0
Receivables Securitization Program [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	0
Receivables Securitization Program [Member] \| Uncommitted Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	550
364-Day Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 750
Debt With Interest Rates Ranging from 4.35% to 4.40%
Debt Instrument [Line Items]
Notes Reduction	$ 558
Debt With Interest Rates Ranging from 4.35% to 4.40% \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.35%
Debt With Interest Rates Ranging from 4.35% to 4.40% \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.40%
Debt With Interest Rates Ranging from 3.00% to 5.15%
Debt Instrument [Line Items]
Notes Reduction	$ 232
Debt With Interest Rates Ranging from 3.00% to 5.15% \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.00%
Debt With Interest Rates Ranging from 3.00% to 5.15% \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.15%
Debt With Interest Rates Ranging from 3.00% to 4.80%
Debt Instrument [Line Items]
Notes Reduction		$ 107
Debt With Interest Rates Ranging from 3.00% to 4.80% \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.00%
Debt With Interest Rates Ranging from 3.00% to 4.80% \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.80%