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Employee Benefits Schedule of Allocation of Plan Assets (Tables)
 12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Schedule of Allocation of Plan Assets [Table Text Block] As of December 31, 2021, the weighted-average target and actual asset allocations relating to our domestic and foreign pension plans' assets are listed below.
December 31,
Asset Class2022 Target Allocation20212020
Alternative investments 1
28 %28 %24 %
Equity securities23 %22 %27 %
Fixed income securities14 %14 %18 %
Liability driven investments 2
21 %21 %15 %
Real estate8 %8 %9 %
Other6 %7 %7 %
Total100 %100 %100 %
1Alternative investments have the flexibility to dynamically invest across a broad range of asset classes including bonds, equity, cash, property and commodities.
2Liability driven investment strategies use government bonds as well as derivative instruments to hedge a portion of the impact of interest rates and inflation movements on the long-term liabilities.