Please answer the given financial question based on the context.
Context: ||As of December 31,||
||2019|2018|
||(Dollars in millions)||
|Deferred tax assets|||
|Post-retirement and pension benefit costs|$1,169|1,111|
|Net operating loss carryforwards|3,167|3,445|
|Other employee benefits|134|162|
|Other|577|553|
|Gross deferred tax assets|5,047|5,271|
|Less valuation allowance|(1,319)|(1,331)|
|Net deferred tax assets|3,728|3,940|
|Deferred tax liabilities|||
|Property, plant and equipment, primarily due to depreciation differences|(3,489)|(3,011)|
|Goodwill and other intangible assets|(3,019)|(3,303)|
|Other|—|(23)|
|Gross deferred tax liabilities|(6,508)|(6,337)|
|Net deferred tax liability|$(2,780)|(2,397)|
The tax effects of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities were as follows:
Of the $2.8 billion and $2.4 billion net deferred tax liability at December 31, 2019 and 2018, respectively, $2.9 billion and $2.5 billion is reflected as a long-term liability and $118 million and $131 million is reflected as a net noncurrent deferred tax asset at December 31, 2019 and 2018, respectively.
Question: What does the table show?
Answer:
tax effects of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities