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Leases (Narrative) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) renewal_option | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Operating Leased Assets [Line Items] |  |  |
Percentage of lease obligations | 89.00% |  |
Term of contract | 12 months |  |
Renewal term increments | 1 year |  |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Property, plant & equipment, net | Property, plant & equipment, net |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Other current liabilities | Other current liabilities |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other liabilities | Other liabilities |
Operating lease ROU asset amortization | $ 38 | $ 37 | $ 38
Other noncash operating lease costs | 13 | $ 13 | $ 16
Short-term lease commitments | $ 416 |  |
Minimum |  |  |
Operating Leased Assets [Line Items] |  |  |
Number of renewal options | renewal_option | 1 |  |

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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
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