XML 173 R103.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Right-of-use assets and Lease liabilities - Maturity of Lease Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Jan. 01, 2019
Disclosure of maturity analysis of lease payments [Line Items]    
Total lease liabilities undiscounted $ 449  
Total lease liabilities 341 $ 286
Not later than one year [member]    
Disclosure of maturity analysis of lease payments [Line Items]    
Total lease liabilities undiscounted 73  
Total lease liabilities 61  
Between one and five years [member]    
Disclosure of maturity analysis of lease payments [Line Items]    
Total lease liabilities undiscounted 176  
Total lease liabilities 140  
Thereafter [member]    
Disclosure of maturity analysis of lease payments [Line Items]    
Total lease liabilities undiscounted 200  
Total lease liabilities $ 140