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Employee Benefits (Tables) | 12 Months Ended
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Dec. 31, 2017
Share-based Compensation [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity | The following table summarizes activity and related information under our stock option plans. All option grants presented in the table, except for the Kite-related replacement awards, had exercise prices not less than the fair value of the underlying common stock on the grant date:
|  | Shares (in thousands) |  | Weighted- Average Exercise Price (in dollars) |  | Weighted-Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 2016 |  | 23,157 |  |  | $ | 37.69 |  |  |  |  |
Granted |  | 6,056 |  |  | $ | 71.75 |  |  |  |  |
Granted-replacement awards (1) |  | 8,047 |  |  | $ | 23.68 |  |  |  |  |
Forfeited |  | (275 | ) |  | $ | 64.66 |  |  |  |  |
Expired |  | (63 | ) |  | $ | 82.50 |  |  |  |  |
Exercised |  | (6,702 | ) |  | $ | 21.99 |  |  |  |  |
Outstanding at December 31, 2017 |  | 30,220 |  |  | $ | 43.93 |  |  | 5.89 |  | $ | 921 |
Exercisable at December 31, 2017 |  | 16,112 |  |  | $ | 35.78 |  |  | 3.61 |  | $ | 624 |
Expected to vest, net of estimated forfeitures at December 31, 2017 |  | 13,314 |  |  | $ | 52.94 |  |  | 8.47 |  | $ | 285 |
_______________________ |  |  |  |  |  |  |  |
Share-based Compensation, Performance Shares Award Outstanding Activity | The following table summarizes activity and related information for our PSUs:
|  | Shares (1) (in thousands) |  | Weighted- Average Grant Date Fair Value Per Share (1) (in dollars)
Outstanding at December 31, 2016 |  | 509 |  |  | $ | 92.32 |
Granted |  | 388 |  |  | $ | 74.42 |
Vested |  | (47 | ) |  | $ | 77.82 |
Forfeited |  | (93 | ) |  | $ | 99.61 |
Outstanding at December 31, 2017 |  | 757 |  |  | $ | 82.80 |
_______________________ |  |  |  |
Note:
(1) | Weighted-average grant-date fair value per share excludes shares related to grants that currently have no grant date as the performance objectives have not yet been defined.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity | The fair value of an RSU is equal to the closing price of our common stock on the grant date. The following table summarizes our RSU activities and related information:
|  | Shares (in thousands) |  | Weighted- Average Grant Date Fair Value Per Share (in dollars)
Outstanding at December 31, 2016 |  | 10,045 |  |  | $ | 85.41 |
Granted |  | 7,156 |  |  | $ | 69.57 |
Granted-replacement awards (1) |  | 2,970 |  |  | $ | 83.19 |
Vested |  | (4,103 | ) |  | $ | 79.19 |
Forfeited |  | (1,063 | ) |  | $ | 81.85 |
Outstanding at December 31, 2017 |  | 15,005 |  |  | $ | 79.37 |
_______________________ |  |  |  |
Schedule of Stock-Based Compensation Expenses Included in Consolidated Statement of Income | The following table summarizes total stock-based compensation expenses included on our Consolidated Statements of Income (in millions):
|  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Cost of goods sold |  | $ | 24 |  |  | $ | 14 |  |  | $ | 11 |
Research and development expenses |  | 232 |  |  | 176 |  |  | 173 |
Selling, general and administrative expenses |  | 393 |  |  | 190 |  |  | 198 |
Stock-based compensation expense included in total costs and expenses |  | 649 |  |  | 380 |  |  | 382 |
Income tax effect |  | (280 | ) |  | (104 | ) |  | (131 | )
Stock-based compensation expense, net of tax |  | $ | 369 |  |  | $ | 276 |  |  | $ | 251 |
Schedule Of Assumptions To Calculate The Estimated Fair Value Of Awards | We used the following assumptions to calculate the estimated fair value of the awards:
|  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Expected volatility: |  |  |  |  |  |
Stock options |  | 28 | % |  | 30 | % |  | 35 | %
ESPP |  | 28 | % |  | 30 | % |  | 32 | %
Expected term in years: |  |  |  |  |  |  |  |  |
Stock options |  | 4.6 |  |  | 5.5 |  |  | 5.7 |
ESPP |  | 0.5 |  |  | 0.5 |  |  | 1.2 |
Risk-free interest rate: |  |  |  |  |  |  |  |  |
Stock options |  | 2.1 | % |  | 1.4 | % |  | 1.4 | %
ESPP |  | 1.8 | % |  | 1.1 | % |  | 1.4 | %
Expected dividend yield |  | 2.7 | % |  | 1.9 | % |  | 1.7 | %

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options and ESPP, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for outstanding performance shares. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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