CONSOLIDATED AND COMBINED STATEMENTS OF EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2012
Common
Issuance of common stock related to the spin-off and transfer of GGP equity on the spin-off date, shares	35,547,049
Issuance of common stock related to the rights offering, shares	13,333,333
Class B
Issuance of common stock related to the spin-off and transfer of GGP equity on the spin-off date, shares	359,056