Commitments And Contingencies (Commitments And Contingencies Activity) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Commitments and Contingencies [Line Items] | |||
Current portion, ending balance at December 31 | $ 190 | $ 211 | |
Environmental [Abstract] | |||
Beginning balance. | 223 | 196 | $ 212 |
Accruals | 67 | 84 | 45 |
Payments | (63) | (57) | (61) |
Ending balance at December 31 | 227 | 223 | 196 |
Current portion, ending balance at December 31 | 62 | 59 | 57 |
Personal Injury [Member] | |||
Commitments and Contingencies [Line Items] | |||
Beginning balance | 271 | 285 | 290 |
Current year accruals | 78 | 74 | 77 |
Changes in estimates for prior years | (11) | (16) | (7) |
Payments | (73) | (72) | (75) |
Ending balance at December 31 | 265 | 271 | 285 |
Current portion, ending balance at December 31 | $ 63 | $ 72 | $ 66 |
X | ||||||||||
- Definition The charge against earnings in the period to change the loss contingency reserves for change in estimates from prior years. No definition available.
|
X | ||||||||||
- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- References No definition available.
|
X | ||||||||||
- Definition Amount of cash outflow to settle environmental loss contingencies. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
X | ||||||||||
- Definition Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- 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. No definition available.
|
X | ||||||||||
- Definition Amount of loss contingency liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition Amount of cash outflow reducing loss contingency liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Details
|