Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time.

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Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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Amount of stock repurchase plan authorized.

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- Definition

Number of shares that have been repurchased and retired during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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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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Subsequent Events - (Details) - USD ($)	Feb. 07, 2018	Jan. 09, 2018	Jan. 09, 2018	Dec. 31, 2017
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends (in dollars per share)	$ 0.175
ASR Agreement
Subsequent Event [Line Items]
Stock repurchase program, authorized amount				$ 100,000
ASR Agreement \| Subsequent Event
Subsequent Event [Line Items]
Shares repurchased during period (in shares)		1,495,714	216,738
Total cash investment		$ 100,000	$ 100,000
Total cash investment per share (usd per share)			$ 66.86