Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 505
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended		6 Months Ended		210 Months Ended
	Aug. 02, 2016	Mar. 18, 2016	Aug. 02, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016
Subsequent Event [Line Items]
Average price per share of repurchased shares (in dollars per share)				$ 34.61	$ 72.34	$ 30.93	$ 73.68	$ 44.75
Dividends declared (in dollars per share)				$ 0.02	$ 0.07	0.04	0.14
Quarterly Dividend [Member]
Subsequent Event [Line Items]
Dividends declared (in dollars per share)						$ 0.04	$ 0.14
Quarterly Dividend Declared in Q3 2016 [Member]
Subsequent Event [Line Items]
Dividends declared date						Aug. 02, 2016
Dividends payable date						Sep. 27, 2016
Dividends record date						Sep. 13, 2016
Loan from GGCP [Member]
Subsequent Event [Line Items]
Repayment on debt		$ 15.0		$ 20.0
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock repurchased (in shares)			26,277
Average price per share of repurchased shares (in dollars per share)			$ 34.15
Subsequent Event [Member] \| Quarterly Dividend Declared in Q3 2016 [Member]
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.02