XML 53 R41.htm IDEA: XBRL DOCUMENT v3.19.2
Right-of-use assets and Lease liabilities - Reconciliation of Lease Commitments (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Disclosure of finance lease and operating lease by lessee [line items]      
Operating leases discounted using the incremental borrowing rate     $ 201
Minimum finance lease payments payable     89
Recognition exemption for short term and low-value leases     (4)
Lease liability as of January 1, 2019 $ 273 $ 286  
Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16   2.90%  
Previously stated [member]      
Disclosure of finance lease and operating lease by lessee [line items]      
Operating leases discounted using the incremental borrowing rate     222
Increase (decrease) due to changes in accounting policy required by IFRSs [member]      
Disclosure of finance lease and operating lease by lessee [line items]      
Operating leases discounted using the incremental borrowing rate     $ 21