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Leases (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Leases [Abstract] |  |
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year | $ 11 |
Operating Lease, Weighted Average Discount Rate, Percent | 5.00% |
Short-term Lease, Cost | $ 31 |
Operating Lease, Cost | 10 |
Operating lease assets | 44 | $ 0
Finance Lease, Right-of-Use Asset | 1 |
Leases of Lessee Disclosure [Text Block] | 45 |
Operating Lease, Liability, Current | 8 | 0
Finance Lease, Liability, Current | 0 |
Non-current operating lease liabilities | 36 | $ 0
Finance Lease, Liability, Noncurrent | 1 |
Total lease liabilities | 45 |
Finance Lease, Right-of-Use Asset, Amortization | 0 |
Finance Lease, Interest Expense | 0 |
Total lease costs | 10 |
Operating Lease, Payments | 9 |
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 47 |
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | $ 1 |
Finance Lease, Weighted Average Discount Rate, Percent | 4.00% |
Operating Lease, Weighted Average Remaining Lease Term | 12 years |
Finance Lease, Weighted Average Remaining Lease Term | 3 years |
Finance Lease, Liability, Payments, Remainder of Fiscal Year | $ 1 |
Lease, Liability, Payments, Remainder of Fiscal Year | 12 |
Lessee, Operating Lease, Liability, Payments, Due Year Two | 8 |
Finance Lease, Liability, Payments, Due Year Two | 0 |
Lease, Liability, Payments, Due Year Two | 8 |
Lessee, Operating Lease, Liability, Payments, Due Year Three | 6 |
Finance Lease, Liability, Payments, Due Year Three | 0 |
Lease, Liability, Payments, Due Year Three | 6 |
Lessee, Operating Lease, Liability, Payments, Due Year Four | 3 |
Finance Lease, Liability, Payments, Due Year Four | 0 |
Lease, Liability, Payments, Due Year Four | 3 |
Lessee, Operating Lease, Liability, Payments, Due Year Five | 2 |
Finance Lease, Liability, Payments, Due Year Five | 0 |
Lease, Liability, Payments, Due Year Five | 2 |
Lessee, Operating Lease, Liability, Payments, Due after Year Five | 29 |
Finance Lease, Liability, Payments, Due after Year Five | 0 |
Lease, Liability, Payments, Due After Year Five | 29 |
Lessee, Operating Lease, Liability, Payments, Due | 59 |
Finance Lease, Liability, Payment, Due | 1 |
Lease, Liability, Payments Due | 60 |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount | (15) |
Finance Lease, Liability, Undiscounted Excess Amount | 0 |
Lease, liability, undiscounted excess amount | (15) |
Operating Lease, Liability | 44 |
Finance Lease, Liability | $ 1 |

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- Definition Weighted average remaining lease term for 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/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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