Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information

	For the Quarters Ended
	December 31, 2016		September 30, 2016		June 30, 2016		March 31, 2016
	(Amounts in millions, except per share data)
Net revenues	$	2,014	$	1,568	$	1,570	$	1,455
Cost of revenues	776		529		598		491
Operating income	425		294		232		461
Net income(1)	254		199		151		363
Basic earnings per share(1)	0.34		0.27		0.20		0.49
Diluted earnings per share (1)	0.33		0.26		0.20		0.48

(1)During the third quarter of 2016, we early adopted an accounting standard which simplifies the accounting for share-based payments. The standard, among other things, requires all excess tax benefits and tax deficiencies to be recorded as an income tax expense or benefit in the consolidated statement of operations (see Note 22). The adoption of the standard impacted our previously reported results for the quarters ended June 30, 2016 and March 31, 2016. As a result of the adoption of this standard, our net income, basic earnings per share, and diluted earnings per share increased by $24 million, $0.03, and $0.03, respectively, for the quarter ended June 30, 2016, and $27 million, $0.04, and $0.03, respectively, for the quarter ended March 31, 2016.

	For the Quarters Ended
	December 31, 2015		September 30, 2015		June 30, 2015		March 31, 2015
	(Amounts in millions, except per share data)
Net revenues	$	1,353	$	990	$	1,044	$	1,278
Cost of revenues	538		337		297		413
Operating income	250		196		332		542
Net income	159		127		212		394
Basic earnings per share	0.22		0.17		0.29		0.54
Diluted earnings per share	0.21		0.17		0.29		0.53