XML 52 R36.htm IDEA: XBRL DOCUMENT
v3.6.0.2

STOCK INCENTIVE PLANS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
STOCK INCENTIVE PLANS [Abstract] |
Disclosure of Share-based Compensation, Stock Options | Transactions involving stock options are summarized as follows:
| Shares Subject to Option |  | Weighted Average Price Per Share |  | Options Exercisable
Outstanding at January 1, 2014 | 2,850,455 |  |  | $ | 132.67 |  |  | 1,652,417 |
Granted | 257,693 |  |  | $ | 248.21 |  |  |  |
Exercised | (479,452 | ) |  | $ | 100.33 |  |  |  |
Canceled or expired | (45,892 | ) |  | $ | 199.80 |  |  |  |
Outstanding at December 31, 2014 | 2,582,804 |  |  | $ | 149.01 |  |  | 1,647,903 |
Granted | 294,522 |  |  | $ | 232.20 |  |  |  |
Exercised | (587,441 | ) |  | $ | 105.08 |  |  |  |
Canceled or expired | (63,599 | ) |  | $ | 216.76 |  |  |  |
Outstanding at December 31, 2015 | 2,226,286 |  |  | $ | 169.96 |  |  | 1,411,460 |
Granted | 294,874 |  |  | $ | 234.25 |  |  |  |
Exercised | (317,110 | ) |  | $ | 108.28 |  |  |  |
Canceled or expired | (80,014 | ) |  | $ | 210.01 |  |  |  |
Outstanding at December 31, 2016 | 2,124,036 |  |  | $ | 186.59 |  |  | 1,346,707 |
Information about stock options excercised | The following table summarizes information about stock options (in thousands of dollars):
|  | For the years ended December 31,
|  | 2016 |  | 2015 |  | 2014
Fair value of options exercised |  | $ | 8,086 |  |  | $ | 14,423 |  |  | $ | 11,167 |
Total intrinsic value of options exercised |  | 35,800 |  |  | 73,671 |  |  | 71,924 |
Fair value of options vested |  | 14,535 |  |  | 16,047 |  |  | 16,115 |
Settlements of options exercised |  | 34,573 |  |  | 61,863 |  |  | 47,974 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range | Information about stock options outstanding and exercisable as of December 31, 2016, is as follows:
|  | Options Outstanding |  | Options Exercisable
|  |  |  | Weighted Average |  |  |  |  | Weighted Average |
Range of Exercise Prices |  | Number |  | Remaining Contractual Life |  | Exercise Price |  | Intrinsic Value (000's) |  | Number |  | Remaining Contractual Life |  | Exercise Price |  | Intrinsic Value (000's)
$72.14 - $85.82 |  | 261,307 |  |  | 1.85 years |  | $ | 80.95 |  |  | $ | 39,536 |  |  | 261,307 |  |  | 1.85 years |  | $ | 80.95 |  |  | $ | 39,536 |
$102.26 - $196.31 |  | 549,608 |  |  | 3.75 years |  | $ | 125.86 |  |  | 58,471 |  |  | 549,608 |  |  | 3.75 years |  | $ | 125.86 |  |  | 58,471 |
$204.01 - $262.14 |  | 1,313,121 |  |  | 7.34 years |  | $ | 233.03 |  |  | (1,020 | ) |  | 535,792 |  |  | 5.86 years |  | $ | 226.51 |  |  | (22 | )
|  | 2,124,036 |  |  | 5.73 years |  | $ | 186.59 |  |  | $ | 96,987 |  |  | 1,346,707 |  |  | 4.22 years |  | $ | 157.19 |  |  | $ | 97,985 |
Assumptions used to determine fair value of options granted | The fair value of each option granted in 2016, 2015 and 2014 used the following assumptions:
|  | For the years ended December 31,
|  | 2016 |  | 2015 |  | 2014
Risk-free interest rate |  | 1.4% |  | 1.5% |  | 2.0%
Expected life |  | 6 years |  | 6 years |  | 6 years
Expected volatility |  | 24.5% |  | 24.9% |  | 25.0%
Expected dividend yield |  | 2.0% |  | 1.9% |  | 1.7%
Transactions involving performance-based share awards | The following table summarizes the transactions involving performance-based share awards:
| 2016 |  | 2015 |  | 2014
| Shares |  | Weighted Average Price Per Share |  | Shares |  | Weighted Average Price Per Share |  | Shares |  | Weighted Average Price Per Share
Beginning nonvested shares outstanding | 73,160 |  |  | $ | 232.72 |  |  | 57,236 |  |  | $ | 220.00 |  |  | 57,533 |  |  | $ | 185.02 |
Issued | 60,414 |  |  | $ | 191.38 |  |  | 47,264 |  |  | $ | 227.26 |  |  | 32,194 |  |  | $ | 242.65 |
Canceled | (11,724 | ) |  | $ | 241.41 |  |  | (13,108 | ) |  | $ | 215.01 |  |  | (6,835 | ) |  | $ | 190.90 |
Vested | (23,510 | ) |  | $ | 242.65 |  |  | (18,232 | ) |  | $ | 191.36 |  |  | (25,656 | ) |  | $ | 177.75 |
Ending nonvested shares outstanding | 98,340 |  |  | $ | 203.91 |  |  | 73,160 |  |  | $ | 232.72 |  |  | 57,236 |  |  | $ | 220.00 |
Activity for restricted stock units | The following table summarizes RSU activity:
| 2016 |  | 2015 |  | 2014
| Shares | Weighted Average Price Per Share |  | Shares | Weighted Average Price Per Share |  | Shares | Weighted Average Price Per Share
Beginning nonvested units | 432,783 |  | $ | 213.45 |  |  | 560,351 |  | $ | 182.40 |  |  | 739,717 |  | $ | 154.09 |
Issued | 113,909 |  | $ | 230.36 |  |  | 104,220 |  | $ | 234.21 |  |  | 103,427 |  | $ | 248.12 |
Canceled | (62,869 | ) | $ | 229.70 |  |  | (38,124 | ) | $ | 219.74 |  |  | (51,410 | ) | $ | 170.98 |
Vested | (110,420 | ) | $ | 193.51 |  |  | (193,664 | ) | $ | 133.56 |  |  | (231,383 | ) | $ | 123.82 |
Ending nonvested units | 373,403 |  | $ | 221.77 |  |  | 432,783 |  | $ | 213.45 |  |  | 560,351 |  | $ | 182.40 |
Fair value of shares vested | $21,367 |  |  | $25,865 |  |  | $28,650 |

X
- Definition Disclosure of fair value and intrinsic value of a stock option exercised during the period under share-based compensation plan. Disclosure may also include cash received upon exercise of options during the period. + References No definition available. + Details
Name: | gww_InformationAboutStockOptionsExcercisedTableTextBlock
Namespace Prefix: | gww_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition STOCK INCENTIVE PLANS [Abstract] + References No definition available. + Details
Name: | gww_StockIncentivePlansAbstract
Namespace Prefix: | gww_
Data Type: | xbrli:stringItemType
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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&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 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
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ShareBasedCompensationPerformanceSharesAwardOutstandingActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration