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DEBT - Schedule of Long-Term Debt Instruments (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020 | Feb. 29, 2020 | May 31, 2017 | May 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |
Other | $ 14 | $ 34 |  |  |  |
Other, fair value | 14 | 34 |  |  |  |
Long-term debt, gross | 2,395 | 2,421 |  |  |  |
Long-term debt, gross, fair value | 2,868 | 2,983 |  |  |  |
Less: Current maturities | 0 | (8) |  |  |  |
Less current maturities, fair value | 0 | (8) |  |  |  |
Debt issuance costs and discounts, net of amortization | (23) | (24) |  |  |  |
Debt issuance costs and discounts, fair value | (23) | (24) |  |  |  |
Long-term debt (less current maturities) | 2,372 | 2,389 |  |  |  |
Long-term debt, excluding current maturities, , fair value | 2,845 | 2,951 |  |  |  |
Yen Denominated Bank Term Loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, fair value | 81 | 87 |  |  |  |
Long-term debt, gross | 81 | 87 |  |  |  |
Senior Notes, 4.60% due 2045 [Member] | Senior notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, fair value | 1,298 | 1,343 |  |  |  |
Long-term debt, gross | $ 1,000 | 1,000 |  |  |  |
Interest rate | 4.60% |  |  |  |  | 4.60%
Senior Notes, 3.75% due 2046 [Member] | Senior notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, fair value | $ 463 | 479 |  |  |  |
Long-term debt, gross | $ 400 | 400 |  |  |  |
Interest rate | 3.75% |  |  |  | 3.75% |
Senior Notes, 4.20% due 2047 [Member] | Senior notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, fair value | $ 497 | 514 |  |  |  |
Long-term debt, gross | $ 400 | 400 |  |  |  |
Interest rate | 4.20% |  |  | 4.20% |  |
Unsecured Senior Notes, 1.85% | Senior notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, fair value | $ 515 | 526 |  |  |  |
Long-term debt, gross | $ 500 | $ 500 |  |  |  |
Debt issuance costs and discounts, net of amortization |  |  | $ 5 |  |  |
Interest rate | 1.85% |  | 1.85% |  |  |

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- Definition Long-Term Debt, Current Maturities, Fair Value Disclosure + References No definition available. + Details
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- Definition Long-Term Debt, Gross, Fair Value Disclosure + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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