Subsequent Events Acquisition (Details) £ in Millions, $ in Millions	Jun. 01, 2016 USD ($)	Jun. 01, 2016 GBP (£)
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	90.00%	90.00%
Payments to Acquire Businesses, Gross	$ 307
Business Combination, Consideration Transferred, Liabilities Incurred	$ 66
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	10.00%	10.00%
Put and Call Option, Exercise Price	$ 34	£ 24

Put and Call Option, Exercise Price

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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-Name Accounting Standards Codification
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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
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