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v3.19.3.a.u2

Post-retirement benefits - Summary of fair value of plan assets (Detail) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Disclosure of information about defined benefit plans [abstract] |  |
Equities | 20.40% | 20.70%
– Quoted | 17.00% | 16.70%
– Private | 3.40% | 4.00%
Bonds | 63.40% | 63.60%
– Government fixed income | 18.40% | 18.00%
– Government inflation-linked | 16.20% | 15.50%
– Corporate and other publicly quoted | 24.10% | 27.10%
– Private | 4.70% | 3.00%
Property | 8.80% | 11.00%
– Quoted property funds | 3.40% | 5.10%
– Unquoted property funds | 5.40% | 5.90%
Qualifying insurance policies | 3.10% | 0.10%
Cash & other | 4.30% | 4.60%
Total | 100.00% | 100.00%

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- Definition Corporate And Other Publicly Quoted Bonds, Amount Contributed To Fair Value Of Plan Assets, Percent + References No definition available. + Details
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- Definition Government Inflation Linked Bonds, Amount Contributed To Fair Value Of Plan Assets, Percent + References No definition available. + Details
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- Definition Private Bonds, Amount Contributed To Fair Value Of Plan Assets, Percent + References No definition available. + Details
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- Definition Property, Amount Contributed To Fair Value Of Plan Assets, Percent + References No definition available. + Details
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- Definition Qualifying Insurance Policies, Amount Contributed To Fair Value Of Plan Assets, Percent + References No definition available. + Details
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- Definition Quoted Equity Securities, Amount Contributed To Fair Value Of Plan Assets, Percent + References No definition available. + Details
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