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Debt and lines of credit | 3 Months Ended
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Mar. 31, 2023
Debt Disclosure [Abstract] |
Debt and lines of credit | Debt and lines of credit Short-term borrowings We maintain a line of credit to provide additional liquidity through bank loans and, if necessary, to support commercial paper borrowings. As of March 31, 2023, the aforementioned line of credit was a variable-rate, revolving credit facility from a consortium of investment-grade banks that allows us to borrow up to $1 billion until March 2024. The interest rate on borrowings under this credit facility, if drawn, is indexed to the applicable Term Secured Overnight Financing Rate (Term SOFR). As of March 31, 2023, our credit facility was undrawn, and we had no commercial paper outstanding. Long-term debt In March 2023, we issued two series of senior unsecured notes for an aggregate principal amount of $1.40 billion, consisting of $750 million of 4.90% notes due in 2033 and $650 million of 5.00% notes due in 2053. We incurred $11 million of issuance and other related costs. The proceeds of the offering were $1.40 billion, net of the original issuance discounts, which will be used for general corporate purposes. Long-term debt outstanding is as follows:
| March 31, |  | December 31,
| 2023 |  | 2022
Notes due 2023 at 2.25% | $ | 500 |  |  | $ | 500 |
Notes due 2024 at 2.625% | 300 |  |  | 300 |
Notes due 2024 at 4.70% | 300 |  |  | 300 |
Notes due 2025 at 1.375% | 750 |  |  | 750 |
Notes due 2026 at 1.125% | 500 |  |  | 500 |
Notes due 2027 at 2.90% | 500 |  |  | 500 |
Notes due 2028 at 4.60% | 500 |  |  | 500 |
Notes due 2029 at 2.25% | 750 |  |  | 750 |
Notes due 2030 at 1.75% | 750 |  |  | 750 |
Notes due 2031 at 1.90% | 500 |  |  | 500 |
Notes due 2032 at 3.65% | 400 |  |  | 400 |
Notes due 2033 at 4.90% | 750 |  |  | — |
Notes due 2039 at 3.875% | 750 |  |  | 750 |
Notes due 2048 at 4.15% | 1,500 |  |  | 1,500 |
Notes due 2051 at 2.70% | 500 |  |  | 500 |
Notes due 2052 at 4.10% | 300 |  |  | 300 |
Notes due 2053 at 5.00% | 650 |  |  | — |
Total debt | 10,200 |  |  | 8,800 |
Net unamortized discounts, premiums and issuance costs | (74) |  |  | (65) |
Total debt, including net unamortized discounts, premiums and issuance costs | 10,126 |  |  | 8,735 |
Current portion of long-term debt | (500) |  |  | (500) |
Long-term debt | $ | 9,626 |  |  | $ | 8,235 |
Interest and debt expense was $68 million and $52 million for the first quarters of 2023 and 2022, respectively. This was net of the amortized discounts, premiums, issuance and other related costs. Capitalized interest was not material.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI https://asc.fasb.org/topic&trid=2208564 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1C -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1I -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1I -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(c)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1C -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1C -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1I -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 + Details
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