Equity and Accumulated Other Comprehensive Earnings - Share repurchase program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	2 Months Ended
Jun. 30, 2019	May 31, 2019	Jun. 30, 2019
Share Repurchase Program
Stock repurchase agreement, value		$ 250
Cash advanced for accelerated stock repurchase agreement		$ 250
Shares received	0.1	3.4
Shares received as percentage of total shares calculated using closing price on agreement date		85.00%
Average price paid per share			$ 62.33

n/a

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- Definition

Amount of cash advanced toward the accelerated stock repurchase agreement.

+ References

No definition available.

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- Definition

Amount of stock to be repurchased under accelerated repurchase agreement.

+ References

No definition available.

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- Definition

Shares received in first repurchase of accelerated share repurchase agreement as a percentage of the total shares calculated using the closing price on the date of the agreement.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-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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