Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2013

Asset Retirement Obligation Disclosure [Abstract]

Summary of Changes in AROs

The changes in AROs during the six months ended June 30, 2013 were as follows:

	June 30, 2013			December 31, 2012
Beginning balance	$	113		$	30
Additions		2			7
Accretion expense		2			5
Changes in estimates, including cost and timing of cash flows		(14	)		11
Settlements/payments		—			(1	)
AROs acquired in the acquisition of mineral sands business		—			61
Ending balance	$	103		$	113
Current portion included in accrued liabilities	$	7		$	7
Noncurrent portion	$	96		$	106

Summary of AROs by Geographic Region

AROs, by geographic region, were as follows:

	June 30, 2013		December 31, 2012
Australia	$	59	$	67
South Africa		32		34
The Netherlands		11		11
United States		1		1
Total	$	103	$	113