Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	[2]	Sep. 30, 2017	Sep. 30, 2016	[2]
Numerator:
Net income attributable to stockholders	[1]	$ 103	$ 34		$ 2,565	$ 116
Earnings allocated to participating securities		(1)			(7)
Net income attributable to stockholders net of earnings allocated to participating securities		$ 102	$ 34		$ 2,558	$ 116
Denominator:
Weighted average shares outstanding - basic		214	198		210	198
Unvested restricted shares		1
Net effect of shares issued with respect to E&P Dividend	[3]				4
Weighted average shares outstanding - diluted		215	198		214	198
Basic EPS	[4]	$ 0.48	$ 0.17		$ 12.16	$ 0.59
Diluted EPS	[4]	$ 0.48	$ 0.17		$ 11.94	$ 0.59

[1] Includes the derecognition of deferred tax liabilities for the three and nine months ended September 30, 2017 of $48 million and $2,360 million, respectively, associated with Park’s intention to be taxed as a REIT.

[2] For 2016, basic and diluted earnings per share were calculated using the number of shares of common stock outstanding upon the completion of the spin-off.

[3] Shares issued in connection with the distribution of our C corporation earnings and profits attributable to the period prior to spin-off (“E&P Dividend”).

[4] Per share amounts are calculated based on unrounded numbers and are calculated independently for each period presented, therefore, the sum of the quarterly EPS does not equal the EPS for the nine months.