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Contractual Obligations and Commitments (Details) € in Millions |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 10, 2021 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jun. 30, 2021 EUR (€)
Debt Instrument [Line Items] |  |  |  |
Total debt |  | $ 9,109,000,000 | $ 9,143,000,000 |
Debt, Current |  | 262,000,000 | 13,000,000 |
Long-term Debt and Capital Lease Obligations |  | 8,847,000,000 | 9,130,000,000 |
Exclusion from EBITDA for Restructuring Charges |  | 500,000,000 |  |
Restructuring charges remaining to be excluded from calculation of consolidated EBITDA |  | 467,000,000 |  |
Litigation and Debt Exclusion from EBITDA |  | 1,455,000,000 |  |
Legal payments remaining to be excluded from calculation of consolidated EBITDA |  | 1,303,000,000 |  |
Letters of Credit Outstanding, Amount |  | 135,000,000 | 124,000,000 |
Qualified Acquisition Consideration |  | $ 1,000,000,000.000 |  |
Current Requirement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 4.25 |  | 4.25
Actual, Covenant [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 3.06 |  | 3.06
Requirement, extension through the remainder of 2020 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio | 4.25 |  |  |
Requirement, as of September 30, 2021 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 4.00 |  | 4.00
Requirement, as of December 31, 2021 and through remaining term of facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 3.75 |  | 3.75
Requirement, fifth quarter following qualified acquisition [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 4.50 |  | 4.50
Requirement, sixth quarter following qualified acquisition |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 4.25 |  | 4.25
Requirement, seventh quarter following qualified acquisition |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 4.00 |  | 4.00
Requirement, eighth quarter following qualified acquisition and through remaining term of facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 3.75 |  | 3.75
Requirement, four succeeding quarters following qualified acquisition |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum Leverage Ratio |  | 4.75 |  | 4.75
the 2018 Facility [Member] | Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  |  | 0 |
Line of Credit Facility, Maximum Borrowing Capacity | $ 2,750,000,000 |  |  |
May 2022 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 0 | 250,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.375% |  | 3.375%
October 2023 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 244,000,000 | 244,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.125% |  | 4.125%
March 2024 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 850,000,000 | 850,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.45% |  | 3.45%
May 2025 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 523,000,000 | 523,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.85% |  | 3.85%
June 2025 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 500,000,000 | 500,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.90% |  | 1.90%
March 2026 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 850,000,000 | 850,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.75% |  | 3.75%
December 2027 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 1,068,000,000 | 1,105,000,000 | € 900
Debt Instrument, Interest Rate, Stated Percentage |  | 0.625% |  | 0.625%
March 2028 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 434,000,000 | 434,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% |  | 4.00%
March 2029 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 850,000,000 | 850,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% |  | 4.00%
June 2030 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 1,200,000,000 | 1,200,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.65% |  | 2.65%
November 2035 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 350,000,000 | 350,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.00% |  | 7.00%
March 2039 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 750,000,000 | 750,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.55% |  | 4.55%
January 2040 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 300,000,000 | 300,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.375% |  | 7.375%
March 2049 Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 1,000,000,000 | 1,000,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.70% |  | 4.70%
Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | $ 9,168,000,000 | 9,205,000,000 |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | (82,000,000) | (88,000,000) |
Interest Rate Swap [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | 4,000,000 | 5,000,000 |
Finance Lease Obligation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | 6,000,000 | 7,000,000 |
2021 Revolving Credit Facility | Line of Credit | Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term Debt |  | 0 |  |
Debt Instrument, Extension Option, Term | 1 year |  |  |
Euro Denominated Factoring Arrangements [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized |  | $ 160,000,000 | $ 148,000,000 |
Average interest rate of de-recognized receivables |  | 2.20% | 1.90% |
Yen Denominated Factoring Arrangements [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized |  | $ 213,000,000 | $ 240,000,000 |
Average interest rate of de-recognized receivables |  | 0.60% | 0.60% |
Renminbi Denominated Factoring Arrangements [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized |  | $ 0 | $ 0 |
Average interest rate of de-recognized receivables |  | 3.10% | 3.50% |

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