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Income Taxes (Significant Components Of The Company’s Deferred Tax Assets (Liabilities)) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Deferred tax assets:      
Deferred tax asset arising from the acquisition of interests in IBGLLC $ 209 $ 190 $ 116
Deferred compensation 11 9 5
Other 22 16 11
Total deferred tax assets 242 215 132
Deferred tax liabilities:      
Foreign 1 2 1
Other 11 8 3
Total deferred tax liabilities 12 10 4
Net deferred tax assets $ 230 $ 205 $ 128