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Share-Based Compensation - Schedule of the Transactions of the Company's Stock Options (Details) - Stock Options shares in Millions | 6 Months Ended
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Jun. 30, 2016 $ / shares shares
Stock Options |
Unexercised options outstanding at the beginning of the period (in shares) | shares | 1.4
Options granted (in shares) | shares | 0.4
Options exercised (in shares) | shares | (0.1)
Unexercised options outstanding at the end of the period (in shares) | shares | 1.7
Exercisable at the end of the period (in shares) | shares | 1.2
Weighted Average Exercise Price |
Unexercised options outstanding at the beginning of the period (in dollars per share) | $ / shares | $ 96.18
Options granted (in dollars per share) | $ / shares | 122.40
Options exercised (in dollars per share) | $ / shares | 77.77
Unexercised options outstanding at the end of the period (in dollars per share) | $ / shares | 103.78
Exercisable at the end of the period (in dollars per share) | $ / shares | $ 95.93
Weighted Average Remaining Contractual Life |
Unexercised options outstanding at the end of the period (in years) | 2 years 10 months 12 days
Exercisable at the end of the period (in years) | 1 year 8 months 18 days

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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