v3.19.3.a.u2
Share-Based Payments (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following table provides the components of share-based compensation expense and the associated tax benefit:
 
 
Year Ended December 31,
(MILLIONS OF DOLLARS)
 
2019

 
2018

 
2017

TSRUs(a)
 
$
294

 
$
302

 
$
221

RSUs
 
275

 
286

 
301

PPSs
 
114

 
276

 
209

PSAs
 
28

 
62

 
47

Stock options
 
7

 
12

 
55

Directors’ compensation
 

 
10

 
7

Share-based payment expense
 
718

 
949

 
840

Tax benefit for share-based compensation expense
 
(137
)
 
(180
)
 
(163
)
Share-based payment expense, net of tax
 
$
581

 
$
769

 
$
677


(a)    Includes expense for PTSRUs, described in Note 13C below, which is not significant for all years presented.

Schedule of Share-based Payment Award, Stock Appreciation Rights, Valuation Assumptions
The following table provides the weighted-average assumptions used in the valuation of TSRUs:
 
 
Year Ended December 31,
2019

 
2018

 
2017

Expected dividend yield(a)
 
3.27
%
 
3.73
%
 
3.69
%
Risk-free interest rate(b)
 
2.55
%
 
2.60
%
 
1.98
%
Expected stock price volatility(c)
 
18.34
%
 
20.00
%
 
18.39
%
Contractual term (years)
 
5.13

 
5.12

 
5.11

(a) 
Determined using a constant dividend yield during the expected term of the TSRU.
(b) 
Determined using the interpolated yield on U.S. Treasury zero-coupon issues.
(c) 
Determined using implied volatility, after consideration of historical volatility.
Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity
The following table summarizes all TSRU activity during 2019:
 
 
TSRUs
(Thousands)

 
Weighted-Average
Grant-Date
Fair Value
Per TSRU

 
Weighted-Average
Grant Price
Per TSRU

Nonvested, December 31, 2018
 
138,945

 
$
6.48

 
$
33.44

Granted
 
39,246

 
8.52

 
43.35

Vested
 
(47,710
)
 
5.92

 
30.70

Forfeited
 
(7,826
)
 
7.63

 
38.90

Nonvested, December 31, 2019
 
122,654

 
$
7.53

 
$
38.01



The following table summarizes TSRU and PTU information as of December 31, 2019(a), (b):
 
 
TSRUs
(Thousands)

 
PTUs
(Thousands)

 
Weighted-Average
Grant Price
Per TSRU

 
Weighted-Average
Remaining Contractual Term (Years)
 
Aggregate Intrinsic Value (Millions)

TSRUs Outstanding
 
179,999

 

 
$
35.33

 
2.6
 
$
1,415

TSRUs Vested
 
57,345

 

 
31.04

 
1.3
 
775

TSRUs Expected to vest(c)
 
118,618

 

 
37.23

 
3.2
 
1,096

TSRUs exercised and converted to PTUs
 

 
1,299

 
$

 
0.7
 
$
51

(a) 
In 2019, we settled 7,953,671 TSRUs with a weighted-average grant price of $27.33 per unit.
(b) 
In 2019, 2,173,131 TSRUs with a weighted-average grant price of $30.68 per unit were converted into 844,871 PTUs.
(c) 
The number of TSRUs expected to vest takes into account an estimate of expected forfeitures.
The following table provides data related to all TSRU activity:
 
 
Year Ended December 31,
(MILLIONS OF DOLLARS, EXCEPT PER TSRU AMOUNTS)
 
2019

 
2018

 
2017

Weighted-average grant-date fair value per TSRU
 
$
8.52

 
$
7.42

 
$
6.23

Total compensation cost related to nonvested TSRU grants not yet recognized, pre-tax
 
$
229

 
$
246

 
$
232

Weighted-average period over which TSRU cost is expected to be recognized (years)
 
1.6

 
1.6

 
1.7


Schedule of Nonvested Restricted Stock Units Activity
The following table summarizes all RSU activity during 2019:
 
 
Shares 
(Thousands)

 
Weighted-Average
Grant-Date Fair Value
Per Share

Nonvested, December 31, 2018
 
27,276

 
$
33.70

Granted
 
7,478

 
43.17

Vested
 
(10,644
)
 
31.66

Reinvested dividend equivalents
 
911

 
39.64

Forfeited
 
(1,614
)
 
38.82

Nonvested, December 31, 2019
 
23,407

 
$
37.54


The following table provides data related to all RSU activity:
(MILLIONS OF DOLLARS)
 
Year Ended December 31,
2019

 
2018

 
2017

Total fair value of shares vested(a)
 
$
454

 
$
146

 
$
584

Total compensation cost related to nonvested RSU awards not yet recognized, pre-tax
 
$
241

 
$
256

 
$
254

Weighted-average period over which RSU cost is expected to be recognized (years)
 
1.7

 
1.7

 
1.7


(a) 
2017 includes the modification for a commitment to pay approximately 6.4 million RSUs to approximately 9,900 employees, including senior and key management employees, for 6.6 million RSUs. These shares were paid in the first quarter of 2018.
Schedule of Nonvested Performance-based Units Activity
The following table summarizes all PPS activity during 2019, with the shares representing the maximum award that could be achieved:
 
 
Shares 
(Thousands)

 
Weighted-Average
Intrinsic Value
Per Share

Nonvested, December 31, 2018
 
19,261

 
$
43.65

Granted
 
6,212

 
43.35

Vested
 
(6,882
)
 
42.89

Forfeited
 
(897
)
 
39.93

Nonvested, December 31, 2019(a)
 
17,694

 
$
39.18


(a) 
Vested and non-vested shares outstanding, but not paid as of December 31, 2019 were 32.0 million.
The following table provides data related to all PPS activity:
(MILLIONS OF DOLLARS)
 
Year Ended December 31,
2019

 
2018

 
2017

Total fair value of shares vested
 
$
136

 
$
169

 
$
131

Total compensation cost related to nonvested PPS awards not yet recognized, pre-tax
 
$
87

 
$
102

 
$
94

Weighted-average period over which PPS cost is expected to be recognized (years)
 
1.8

 
1.8

 
1.7



The following table summarizes all PSA activity during 2019, with the shares granted representing the maximum award that could be achieved:
 
 
Shares 
(Thousands)

 
Weighted-Average
Intrinsic Value
Per Share

Nonvested, December 31, 2018
 
5,282

 
$
43.65

Granted
 
1,716

 
43.35

Vested
 
(1,481
)
 
42.89

Forfeited
 
(456
)
 
41.91

Nonvested, December 31, 2019
 
5,061

 
$
39.18


The following table provides data related to all PSA activity:
 
 
Year Ended December 31,
(MILLIONS OF DOLLARS)
 
2019

 
2018

 
2017

Total fair value of shares vested(a)
 
$
64

 
$
4

 
$
58

Total compensation cost related to nonvested PSA grants not yet recognized, pre-tax
 
$
34

 
$
41

 
$
34

Weighted-average period over which PSA cost is expected to be recognized (years)
 
1.8

 
1.8

 
1.8


(a) 
2017 includes the modification for a commitment to pay 1.1 million PSAs to approximately 90 employees, including senior and key management employees, for 1.1 million PSAs. These shares were paid in the first quarter of 2018.
Schedule of Valuation Assumptions
The following table provides the weighted-average assumptions used in the valuation of stock options:
 
 
Year Ended December 31,
  
 
2019

 
2018

 
2017

Expected dividend yield(a)
 
3.27
%
 
3.73
%
 
3.69
%
Risk-free interest rate(b)
 
2.66
%
 
2.85
%
 
2.23
%
Expected stock price volatility(c)
 
18.34
%
 
20.02
%
 
18.39
%
Expected term (years)(d)
 
6.75

 
6.75

 
6.75

(a) 
Determined using a constant dividend yield during the expected term of the option.
(b) 
Determined using the interpolated yield on U.S. Treasury zero-coupon issues.
(c) 
Determined using implied volatility, after consideration of historical volatility.
(d) 
Determined using historical exercise and post-vesting termination patterns.
Schedule of Share-based Compensation, Stock Options, Activity
The following table summarizes all stock option activity during 2019:
 
 
Shares
(Thousands)

 
Weighted-Average
Exercise Price
Per Share

 
Weighted-Average
Remaining Contractual Term
(Years)
 
Aggregate
Intrinsic Value(a)
(Millions)

Outstanding, December 31, 2018
 
103,791

 
$
27.69

 
 
 
 
Granted
 
1,181

 
43.35

 
 
 
 
Exercised
 
(15,964
)
 
24.84

 
 
 
 
Forfeited
 
(55
)
 
37.67

 
 
 
 
Expired
 
(353
)
 
31.12

 
 
 
 
Outstanding, December 31, 2019
 
88,600

 
28.39

 
3.6
 
$
960

Vested and expected to vest, December 31, 2019(b)
 
88,469

 
28.37

 
3.6
 
960

Exercisable, December 31, 2019
 
85,372

 
$
28.04

 
3.4
 
$
951

(a) 
Market price of our underlying common stock less exercise price.
(b) 
The number of options expected to vest takes into account an estimate of expected forfeitures.
The following table summarizes data related to all stock option activity:
 
 
Year Ended December 31,
(MILLIONS OF DOLLARS, EXCEPT PER STOCK OPTION AMOUNTS)
 
2019

 
2018

 
2017

Weighted-average grant-date fair value per stock option
 
$
5.98

 
$
5.06

 
$
4.01

Aggregate intrinsic value on exercise
 
$
261

 
$
625

 
$
331

Cash received upon exercise
 
$
394

 
$
1,259

 
$
862

Tax benefits realized related to exercise
 
$
47

 
$
115

 
$
95

Total compensation cost related to nonvested stock options not yet recognized, pre-tax
 
$
5

 
$
5

 
$
10

Weighted-average period over which stock option compensation cost is expected to be recognized (years)
 
1.6

 
1.7

 
0.8