Incentive Compensation Plans Stock-based Compensation Awards (Details) shares in Millions	3 Months Ended
Mar. 31, 2018 $ / shares shares
Restricted stock
Incentive Compensation Plans
Granted awards	1.7
Weighted average grant date fair value \| $ / shares	$ 23.62
Performance based stock
Incentive Compensation Plans
Granted awards	2.8
Weighted average grant date fair value \| $ / shares	$ 21.15
Restricted stock units (settled in cash)
Incentive Compensation Plans
Granted awards	0.1
Weighted average grant date fair value \| $ / shares	$ 23.63
Total stock-based compensation awards
Incentive Compensation Plans
Granted awards	4.6

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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