Debt instrument maturity date year.

No definition available.

Name:	ck0000096271_DebtInstrumentMaturityDateYear
Namespace Prefix:	ck0000096271_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the debt instrument was offered for sale, in YYYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Start date of debt instrument redemption period, in YYYY-MM-DD format.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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+ Details

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Balance Type:	credit
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- Details

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Namespace Prefix:
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Period Type:

- Details

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Period Type:

- Details

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Period Type:

- Details

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- Details

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- Details

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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Millions				12 Months Ended
	Jul. 12, 2024	Jan. 30, 2024	Jul. 12, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Repayment of notes				$ 300	$ 0	$ 250
Aggregate principal amount issued		$ 500
Stated interest rate		4.90%
Debt instrument maturity date		Mar. 01, 2029
Debt instrument, offering date		Jan. 30, 2024
2.40% Notes [Member]
Debt Instrument [Line Items]
Stated interest rate				2.40%
3.45% Notes [Member]
Debt Instrument [Line Items]
Stated interest rate				3.45%
5.00% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, maturity year			2052
Aggregate principal amount issued			$ 300
Stated interest rate			5.00%	5.00%
Debt instrument maturity date			Jul. 15, 2052
Redeemable principal amount percentage			100.00%
Basis spread on federal funds rate			30.00%
Redeemable principal amount percentage			100.00%
Debt instrument, start date of redemption			Jan. 15, 2052
Debt instrument, offering date			Jul. 12, 2022
3.875% Notes [Member]
Debt Instrument [Line Items]
Repayment of notes	$ 300
Debt instrument, maturity year			2024
Aggregate principal amount issued			$ 300
Stated interest rate			3.875%
Debt instrument maturity date			Jul. 12, 2024
Basis spread on federal funds rate			15.00%
Debt instrument, offering date			Jul. 12, 2022
4.90% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, maturity year		2029
Aggregate principal amount issued		$ 500
Stated interest rate		4.90%
Debt instrument maturity date		Mar. 01, 2029
Redeemable principal amount percentage		100.00%
Basis spread on federal funds rate		15.00%
Redeemable principal amount percentage		100.00%
Debt instrument, offering date		Jan. 30, 2024
4.90% Notes [Member] \| Long-Term Debt [Member] \| 5-year Facility [Member]
Debt Instrument [Line Items]
Borrowings outstanding		$ 497