Leases Lessee Disclosure - Lease Costs (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Lease Costs
Operating lease costs	$ 42
Finance lease costs:
Amortization of leased assets	3
Interest on lease liabilities	0
Other lease costs (1)	7
Impairment loss	1
Less: Sublease income, gross	1
Net lease cost	$ 52

No definition available.

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- Definition

Amount of interest expense on finance lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
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+ Details

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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

+ Details

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
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- References

No definition available.

+ Details

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

+ References

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-Publisher FASB
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+ Details

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- Definition

Amount of sublease income excluding finance and operating lease expense.

+ References

+ Details

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- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

+ References

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