XML 228 R130.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Post-employment benefits for associates - Breakdown of DBO for pension plans by geography and type of member (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of net defined benefit liability (asset) [line items]    
Prepaid benefit costs $ 8 $ 4
Pension plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 723 662
Fair value of plan assets 451 424
Funded status (272) (238)
Pension plans [member] | Active [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 440 406
Pension plans [member] | Deferred pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 151 150
Pension plans [member] | Pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 132 106
Pension plans [member] | Unfunded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 99 88
Pension plans [member] | Unfunded portion of funded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 192 166
Country of domicile [member] | Switzerland | Pension plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 244 201
Fair value of plan assets 132 106
Funded status (112) (95)
Country of domicile [member] | Switzerland | Pension plans [member] | Active [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 216 166
Country of domicile [member] | Switzerland | Pension plans [member] | Deferred pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 12 18
Country of domicile [member] | Switzerland | Pension plans [member] | Pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 16 17
Country of domicile [member] | Switzerland | Pension plans [member] | Unfunded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 47 49
Country of domicile [member] | Switzerland | Pension plans [member] | Unfunded portion of funded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 65 46
Foreign countries [member] | United States | Pension plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 127 111
Fair value of plan assets 80 67
Funded status (47) (44)
Foreign countries [member] | United States | Pension plans [member] | Active [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 40 36
Foreign countries [member] | United States | Pension plans [member] | Deferred pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 46 32
Foreign countries [member] | United States | Pension plans [member] | Pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 41 43
Foreign countries [member] | United States | Pension plans [member] | Unfunded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 29 21
Foreign countries [member] | United States | Pension plans [member] | Unfunded portion of funded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 18 23
Foreign countries [member] | United Kingdom | Pension plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 109 94
Fair value of plan assets 17 16
Funded status (92) (78)
Foreign countries [member] | United Kingdom | Pension plans [member] | Active [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 61 56
Foreign countries [member] | United Kingdom | Pension plans [member] | Deferred pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 27 22
Foreign countries [member] | United Kingdom | Pension plans [member] | Pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 21 16
Foreign countries [member] | United Kingdom | Pension plans [member] | Unfunded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 0 0
Foreign countries [member] | United Kingdom | Pension plans [member] | Unfunded portion of funded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 92 78
Foreign countries [member] | Germany | Pension plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 98 86
Fair value of plan assets 109 98
Funded status 11 12
Foreign countries [member] | Germany | Pension plans [member] | Active [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 0 0
Foreign countries [member] | Germany | Pension plans [member] | Deferred pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 54 69
Foreign countries [member] | Germany | Pension plans [member] | Pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 44 17
Foreign countries [member] | Germany | Pension plans [member] | Unfunded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 0 0
Foreign countries [member] | Germany | Pension plans [member] | Unfunded portion of funded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 0 0
Foreign countries [member] | Rest of the world | Pension plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 145 170
Fair value of plan assets 113 137
Funded status (32) (33)
Foreign countries [member] | Rest of the world | Pension plans [member] | Active [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 123 148
Foreign countries [member] | Rest of the world | Pension plans [member] | Deferred pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 12 9
Foreign countries [member] | Rest of the world | Pension plans [member] | Pensioners [Member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 10 13
Foreign countries [member] | Rest of the world | Pension plans [member] | Unfunded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation 23 18
Foreign countries [member] | Rest of the world | Pension plans [member] | Unfunded portion of funded plans [member]    
Disclosure of net defined benefit liability (asset) [line items]    
Benefit obligation $ 17 $ 19