XML 88 R46.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |
Summary of Share-Based Payment Award Stock Options Valuation Assumptions |  | The weighted average assumptions used in the Monte Carlo simulation model to calculate the fair value of the Company’s stock unit awards are outlined in the table below.
|  |  | 2016
Expected volatility of stock price |  |  | 46%
Risk-free interest rate |  |  | 0.98%
Valuation period |  |  | 3 years
Dividend yield |  |  | 0%
Annual Activity of RSUs | Annual activity related to stock units consisted of (in thousands of shares):
|  |  | Number of Shares |  | Weighted Average Grant Date Fair Value |  | Weighted Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value (in millions)
Time-based RSUs |  |  |  |  |  |  |
| Outstanding at January 1, 2018 | 1,160 |  |  | $ | 34.54 |  |  |  |  |
|  | Granted (a) | 322 |  |  | 48.41 |  |  |  |  |
|  | Vested (b) | (560 | ) |  | 36.02 |  |  |  |  |
|  | Forfeited | (84 | ) |  | 36.53 |  |  |  |  |
| Outstanding and expected to vest at December 31, 2018 (c) | 838 |  |  | $ | 38.67 |  |  | 0.8 |  | $ | 19 |
Performance-based and market-based RSUs |  |  |  |  |  |  |
| Outstanding at January 1, 2018 | 994 |  |  | $ | 33.06 |  |  |  |  |
|  | Granted (a) | 353 |  |  | 48.52 |  |  |  |  |
|  | Vested (b) | — |  |  | — |  |  |  |  |
|  | Forfeited | (178 | ) |  | 50.05 |  |  |  |  |
| Outstanding at December 31, 2018 | 1,169 |  |  | $ | 35.14 |  |  | 1.0 |  | $ | 26 |
| Outstanding and expected to vest at December 31, 2018 (c) | 255 |  |  | $ | 44.57 |  |  | 1.9 |  | $ | 6 |
__________
(a) | Reflects the maximum number of stock units assuming achievement of all performance-, market- and time-vesting criteria and does not include those for non-employee directors, which are discussed separately below. The weighted-average fair value of time-based RSUs and performance-based RSUs granted in 2017 was $35.32 and $35.21, respectively, and the weighted-average fair value of time-based RSUs and performance-based and market-based RSUs granted in 2016 was $25.92 and $23.33, respectively.
(b) | The total fair value of RSUs vested during 2018, 2017 and 2016 was $20 million, $23 million and $31 million, respectively. The total grant date fair value of cash units vested during the year 2016 was $2 million.
(c) | Aggregate unrecognized compensation expense related to time-based RSUs and performance-based and market-based RSUs amounted to $28 million and will be recognized over a weighted average vesting period of 1.0 year.
Summary of Share Based Compensation Shares Authorized Under Stock Option Plans by Exercise Price Range | The annual stock option activity consisted of (in thousands of shares):
|  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value (in millions)
Outstanding at January 1, 2018 | 273 |  |  | $ | 7.08 |  |  | 1.7 |  | $ | 10 |
| Granted (a) | — |  |  | — |  |  |  |  | — |
| Exercised (b) | (216 | ) |  | 8.72 |  |  |  |  | 8 |
| Forfeited/expired | — |  |  | — |  |  |  |  |
Outstanding and exercisable at December 31, 2018 | 57 |  |  | $ | 0.79 |  |  | 0.1 |  | $ | 1 |
__________
(a) | No stock options were granted during 2017 and 2016.
(b) | Stock options exercised during 2017 and 2016 had intrinsic values of $21 million and $1 million, respectively. The cash received from the exercise of options was $2 million in 2018 and insignificant in 2017 and 2016.

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration