Ayres Services acquired an asset for $88 million in 2021. The asset is depreciated for financial reporting purposes over four years on a straight-line basis (no residual value). For tax purposes the assets cost is depreciated by MACRS. The enacted tax rate is 25%. Amounts for pretax accounting income, depreciation, and taxable income in 2021, 2022, 2023, and 2024 are as follows:

	($ in millions)
	2021				2022				2023				2024
Pretax accounting income	$	335			$	355			$	370			$	405
Depreciation on the income statement		22				22				22				22
Depreciation on the tax return		(50	)			(14	)			(16	)			(8	)
Taxable income	$	307			$	363			$	376			$	419

Required: For December 31 of each year, determine (a) the cumulative temporary book-tax difference for the depreciable asset and (b) the balance to be reported in the deferred tax liability account.