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v3.19.1

Contingencies And Commitments (Narrative) (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2019 USD ($)
Loss Contingencies [Line Items] |
Operating lease ROU asset | $ 197
Operating lease liability | $ 204
Weighted average discount rate, operating lease | 3.40%
Weighted average remaining operating lease term | 7 years
Operating lease expense | $ 13
Sale-leaseback, net book value | 177
Sale-leaseback, accumulated amortization | $ 300
Weighted average discount rate, finance lease | 2.50%
Weighted average remaining finance lease term | 3 years
Additional office lease | $ 37
Pending Litigation [Member] |
Loss Contingencies [Line Items] |
Loss contingency, estimate | $ 50
Maximum [Member] |
Loss Contingencies [Line Items] |
Lease term | 11 years
Minimum [Member] |
Loss Contingencies [Line Items] |
Lease term | 4 years

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