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Earnings Per Share and Certain Related Information - Narrative (Details) - USD ($)							1 Months Ended
	Jan. 17, 2019	Sep. 11, 2018	Jul. 19, 2018	May 03, 2018	Jan. 18, 2018	Sep. 27, 2017	Jul. 23, 2015
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Amount authorized to be repurchased							$ 500,000,000.0
Number of shares repurchased (in shares)							2,324,161
Dividends declared (in dollars per share)		$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.15
Subsequent Event
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Amount authorized to be repurchased	$ 1,000,000,000.0
Dividends declared (in dollars per share)	$ 0.17

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-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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+ References

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Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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