Deferred Charges and Other Assets

12 Months Ended

Dec. 31, 2016

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

DEFERRED CHARGES AND OTHER ASSETS

6. DEFERRED CHARGES AND OTHER ASSETS

“Deferred charges and other assets, net” consisted of the following (in millions):

	December 31,
	2016		2015
Deferred turnaround and catalyst costs, net	$	1,614	$	1,484
Income taxes receivable	447		266
Investments in joint ventures	201		201
Intangible assets, net	148		156
Other	491		519
Deferred charges and other assets, net	$	2,901	$	2,626

Amortization expense for the deferred charges and other assets shown above was $575 million, $542 million, and $489 million for the years ended December 31, 2016, 2015, and 2014, respectively.