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Other Comprehensive Income (Loss) Defined Benefit Plans Net Unamortized Gain Loss Attributable to Redeemable Noncontrolling Interest Arising During Period Net Of Tax

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Other Comprehensive Income (Loss) Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Redeemable Noncontrolling Interest

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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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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Amount, before tax, of increase (decrease) in the cumulative translation adjustment from gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stockholders' Equity - Narrative (Details) $ / shares in Units, shares in Millions	1 Months Ended		3 Months Ended			6 Months Ended
	Jul. 31, 2018 $ / shares	Mar. 31, 2018 USD ($) shares	Sep. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares	Sep. 30, 2017 USD ($) $ / shares	Sep. 30, 2018 USD ($) $ / shares	Sep. 30, 2017 USD ($) $ / shares	Sep. 30, 2018 EUR (€) vote	Sep. 30, 2018 GBP (£) vote	Sep. 30, 2018 USD ($) vote	May 31, 2018 USD ($)	Sep. 30, 2017 EUR (€)
Accelerated Share Repurchases [Line Items]
Share of common stock outstanding, vote on proposals \| vote								1	1	1
Dividends declared per common share (in dollars per share) \| $ / shares	$ 0.39		$ 0.39	$ 0.34	$ 0.34	$ 0.73	$ 0.62
Authorized repurchase amount (up to)											$ 4,000,000,000.0
Common stock repurchased (shares) \| shares			4.6	2.0
Shares repurchased during period			$ 580,000,000	$ 297,000,000
Average price per share of shares repurchased (in usd per share) \| $ / shares			$ 127.39	$ 147.92
Authorized amount available for future repurchases										$ 4,200,000,000
Translation gain (loss) attributable to redeemable noncontrolling interest			$ 23,000,000		$ 63,000,000	$ 184,000,000	$ 177,000,000
Long-term debt outstanding		$ 7,880,000,000								$ 7,694,000,000
Net actuarial (gains) losses attributable to redeemable noncontrolling interest			0		0	2,000,000	(1,000,000)
Term Loan
Accelerated Share Repurchases [Line Items]
Translation gain (loss) attributable to redeemable noncontrolling interest					(63,000,000)		(177,000,000)
Derivatives used in net investment hedge, gains (loss) gross			5,000,000			39,000,000
Term Loan \| Euro Denominated Notes
Accelerated Share Repurchases [Line Items]
Long-term debt outstanding \| €								€ 1,950,000,000.00				€ 1,200,000,000.00
Term Loan \| British Pound Sterling Denominated Notes
Accelerated Share Repurchases [Line Items]
Long-term debt outstanding \| £									£ 450,000,000
Accelerated Share Repurchase
Accelerated Share Repurchases [Line Items]
Authorized repurchase amount (up to)		$ 500,000,000
Common stock repurchased (shares) \| shares		2.5		1.0
Average price per share of shares repurchased (in usd per share) \| $ / shares				$ 143.66
Redeemable Noncontrolling Interest
Accelerated Share Repurchases [Line Items]
Translation gain (loss) attributable to redeemable noncontrolling interest			$ 7,000,000		$ 33,000,000	$ 46,000,000	$ 148,000,000