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Share-Based Compensation
 3 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
SHARE-BASED COMPENSATION
SHARE-BASED COMPENSATION
The company recognized total expenses of $40.9 million and $49.2 million related to equity-settled share-based payment transactions in the three months ended March 31, 2018 and 2017, respectively.
Share Awards
Movements on share awards during the periods ended March 31, are detailed below:
 
For the three months ended March 31, 2018
 
For the three months ended March 31, 2017
Millions of shares, except fair values
Time- Vested
 
Performance- Vested
 
Weighted Average Grant Date Fair Value ($)
 
Time- Vested
 
Performance- Vested
Unvested at the beginning of period
12.0

 
0.9

 
31.52

 
12.1

 
0.8

Granted during the period
5.1

 
0.4

 
32.55

 
5.1

 
0.3

Forfeited during the period
(0.1
)
 
—

 
31.74

 
(0.3
)
 
—

Vested and distributed during the period
(4.2
)
 
(0.3
)
 
32.17

 
(4.4
)
 
(0.2
)
Unvested at the end of the period
12.8

 
1.0

 
31.72

 
12.5

 
0.9



The total fair value of shares that vested during the three months ended March 31, 2018 was $142.7 million (three months ended March 31, 2017: $145.9 million). The weighted average grant date fair value of the share awards that were granted during the three months ended March 31, 2018 was $32.55 (three months ended March 31, 2017: $32.19).
At March 31, 2018, there was $403.2 million of total unrecognized compensation cost related to non-vested share awards; that cost is expected to be recognized over a weighted average period of 2.93 years.